I've heard about malfunctioning PCV valves from a number of sources over the years, but never took the time to really dig into the specifics. Your detailed explanations of the possible impact of a failed PCV valve were super-clear and informative. I've been seeing light white smoke from my exhaust pipes over the past 10K miles or so, even when the engine is hot, which was one of the symptoms that you mentioned in your video. I'll be replacing the PCV valve to see if this corrects the problem. Thanks for your super-useful information!
I just had my new bought 2015 Town & Country diagnostic test done by the Chrysler dealer and one of the items noted was PCV valve leaking. This repair cost me $319.00, of which $119.00 was for parts & $199.95 for labor. I truly did not realize how important this repair was. Thank you.
@GLHF Yeah, they redesign the pcv valve for this engine. It's 2 bolts opposed to 3. The old hose also won't fit the new pcv valve, so you're buying a new hose as well. They both come to around $50-ish to buy as a pair, even at Autozone, for the Pentastar 3.6L .. I'd never buy or take anything to a dealership other than for programming.
Just cleaned, sealed and replaced all the parts to the breather box for the first time ever! 1995 Honda Del Sol Civic. What are the benefits of doing this? Better Gas Mileage? More Horse Power? It really seems to be running much smoother and so far I think it's getting better gas mileage. Just did it a few days ago so haven't driven it much to know yet about gas mileage...
Thank you for your comment! You're absolutely correct. The PCV (Positive Crankcase Ventilation) valve's primary function is to recirculate blow-by gases back into the intake manifold, which helps reduce emissions by reintroducing them into the combustion process. On the other hand, the intake breather hose is responsible for bringing fresh air into the crankcase to ensure proper ventilation and prevent pressure buildup. Both components work together to maintain engine efficiency and emissions control. Appreciate your input!
Great question! No, a car doesn’t always have to trigger a check engine light for PCV (Positive Crankcase Ventilation) valve issues. A faulty PCV valve can cause problems without illuminating the check engine light. Symptoms might include: Rough idling or stalling Increased oil consumption or oil leaks Sludge buildup in the engine Poor fuel economy or power loss If you’re noticing any of these signs, it’s a good idea to inspect the PCV valve even if the check engine light isn’t on. A simple check and replacement can often solve the issue and prevent bigger problems down the line. 🔧 Hope this helps, and feel free to ask if you have more questions! 🚗👍 #PCVValve #CarSymptoms #CarMaintenance
ChatGPT The concept of an engine crankcase breather pipe, also known as a crankcase ventilation system or PCV (Positive Crankcase Ventilation) system, has evolved over the years in automotive design. Its primary purpose is to vent harmful gases and excess pressure from the engine's crankcase to prevent various issues such as excessive pressure buildup, oil contamination, and emissions of harmful pollutants. In older vehicles, the crankcase breather pipe may have been a simple vent that released gases directly into the atmosphere, which could contribute to air pollution. Modern cars have more advanced PCV systems that route these gases back into the intake manifold to be burned in the combustion process. This helps reduce emissions and improve fuel efficiency. If a modern car's PCV system is not functioning correctly, it can lead to various problems, such as increased oil consumption, reduced fuel efficiency, and potential damage to engine components. Regular maintenance and checking of the PCV system are essential to ensure the engine operates efficiently and cleanly. It's essential to follow the manufacturer's recommended maintenance schedule and use quality parts and fluids to keep your car's engine in good health and minimize its impact on the environment. If you suspect your car's PCV system is not functioning correctly, it's advisable to have it inspected and repaired by a qualified mechanic thank you very much for the feedback really appreciated
Hello! I'm glad you found the video helpful. To address your question, yes, it's possible for a malfunctioning Positive Crankcase Ventilation (PCV) valve to not always trigger a diagnostic trouble code (DTC). The PCV valve's primary function is to regulate the flow of gases between the crankcase and the intake manifold. If it fails or becomes clogged, it can cause various issues such as poor engine performance, increased oil consumption, rough idling, and even excessive smoke from the exhaust. However, whether a PCV valve issue triggers a diagnostic trouble code depends on the vehicle's make and model, as well as the specific conditions of the malfunction. Some modern vehicles have sophisticated engine management systems that can detect certain faults and trigger corresponding codes, while others may not have sensors or monitoring systems in place specifically for the PCV valve. Additionally, if the issue is intermittent or hasn't reached a threshold level of severity, it might not trigger a code immediately. It's also possible for a PCV valve problem to manifest in ways that aren't directly linked to a specific code, making diagnosis more challenging. If you suspect a problem with your PCV valve but aren't seeing any codes, it's still worth investigating further, especially if you're experiencing symptoms like those mentioned earlier. Regular maintenance checks, including inspection and potential replacement of the PCV valve as part of routine service, can help prevent issues from escalating. Thank You
I have an exhaust smell (moreso on colder startups). PCV Valve changed a few months ago. A bit lower (than I expect) gas mileage. Will have to see if there is an exhaust leak somewhere
Did you reset your ECU afterwards? All the fuel trims stored in memory could well be for running with a failing pcv valve, resetting the ecu will allow everything to operate in the initial learning mode with the car components working as they should be.
@kaytube5645 nope. I just have a Basic Bluetooth OBD2 reader. Not if if it truly resets the ECM (ad others have mentioned to do). Gonna try taking out the oxygen sensors and cleaning them (carefully) with some brake cleaner or throttle body cleaner (whichever is appropriate). Else look at changing a mid pipe gasket or similar. Maybe change all bolts too, while I'm there.
Thank you so much! I'm glad you found the explanation helpful. Your support means a lot! If you have any other questions or need further clarification, feel free to ask.
What can make the oil cap filler and dip stick become under vacuum sort of sounds like a soda bottle being open after being shaken a lil or is it ment to be like that bmw m54
It sounds like you might be experiencing some pressure build-up or vacuum-related issues with your BMW M54 engine. When the oil cap filler and dipstick show signs of vacuum, it could indicate problems with the PCV (Positive Crankcase Ventilation) system or potentially other issues related to engine performance or seals. It's not necessarily "meant" to be like that, as excessive pressure or vacuum in the crankcase can lead to various problems, including oil leaks and decreased engine efficiency. It's advisable to have a qualified mechanic inspect your engine to diagnose and address any underlying issues.
@@CLICKANDLEARNCh yeah ot was the pcv system some how the rubber thing inside the pcv was split fixed now the a 3.2l pcv and oil catch can that returns back to the sump but since driving the car around with the bad pcv I now have a oil leak to the exhaust side on the face of the engine looks to be a either the exhaust cam sensor oring vanos solenoid ornig or vanos gasket (my opinion as noting is coming from valvw cover gasket
Hello I have Mercedes Vito Euro 6 diesel, and getting heavy greyish/bluish smoke from exhaust, I’ve changed DPF pressure sensor and cleaned the DPF filter, this lasted 1 day with no smoke, Now it’s back, I get a strong smell of oil aswell as smoke from exhaust, could it be bad PCV Valve?
Thanks for reaching out! From the symptoms you’ve described-heavy greyish/blue smoke and the strong smell of oil-it’s possible that a faulty PCV (Positive Crankcase Ventilation) valve could be the cause. A bad PCV valve can allow oil to enter the intake, leading to excessive oil burning, which results in smoke and the smell of oil from the exhaust. However, since you’ve already cleaned the DPF and replaced the pressure sensor, it might also be worth checking the turbocharger seals or any other potential oil leaks, as these could also cause similar symptoms. We’d be happy to take a closer look at SANU Motors if you need further diagnosis. Feel free to bring your Mercedes Vito by the garage for a more thorough inspection. Thanks again for your question, and we hope to help you get this resolved!
PCV are inexpensive and should be changed every five years anyways. While you do your basic tune up change the ERG valve at the same time along with the air cleaner and oil change. The MAF sensor is typically OK but can also be cleaned at this time with just 50% rubbing alcohol in a spray bottle. After cleaning the MAF sensor just let the MAF sensor dry itself in the sun for 30 minutes before reinstalling. No need to buy that expensive MAF sensor cleaner at the auto-parts store.
Thank you for sharing these helpful tips! Regular maintenance is key to keeping our vehicles running smoothly. Changing the PCV valve every five years, along with other components like the EGR valve, air cleaner, and performing an oil change, is a great practice to ensure optimal engine performance and emissions control. Cleaning the MAF sensor with rubbing alcohol is a cost-effective solution, and letting it dry in the sun is a smart way to ensure proper reinstallation without needing to invest in expensive MAF sensor cleaners. Your advice will surely help many DIY enthusiasts keep their vehicles in top shape without breaking the bank. Appreciate your contribution!
I have changed mine because it was giving me problems a bunch of problems. After putting the new oem pcv it was driving great for one day but the next day the problems and error came back, what it might be? Scirocco 2.0tfsi 2009
Just get a oil catch can- no more oil and gases in the turbo,while still getting out the pressure and vapor. Ive done this and egr delete and now my car pulls just clean air in the turbo. Before all my turbo hoses were with oil on them+the intercooler,rough idle and was accelerating at start with blue smoke of oil. Now all the problems are gone.
When you replace the PCV (Positive Crankcase Ventilation) valve in your 2009 Scirocco 2.0 TFSI and experience problems and error codes the following day, it could be due to several reasons: 1. **Defective or Incorrect PCV Valve**: Even though you installed a new OEM PCV valve, it's possible that the part is defective. Manufacturing defects can occur even with new parts. Double-check that the part number matches the specific requirements for your vehicle. 2. **Installation Issues**: If the PCV valve wasn't installed correctly, it might not be sealing properly or could be loose, leading to continued issues. Verify that the PCV valve is seated properly and that all connections are secure. 3. **Related Components**: The PCV system involves several components, including hoses, seals, and connections. If there’s a crack or leak in any of these, it could cause problems similar to those experienced before replacing the PCV valve. Inspect the surrounding components for any signs of wear or damage. 4. **Engine Oil**: Sometimes, a faulty PCV valve can cause excess oil consumption or oil contamination in the intake system. If there's oil in the intake, it might be necessary to clean the intake system, throttle body, and related components to resolve the issue. 5. **Check Engine Light Codes**: If the error returned, the car's ECU (Engine Control Unit) might have stored specific codes that could help diagnose the issue. Reading these codes with an OBD-II scanner can provide insights into what's going wrong. 6. **Software/ECU Issues**: Occasionally, the ECU might need a reset or an update after replacing certain components like the PCV valve. Consider resetting the ECU or having it checked for any required updates. 7. **Secondary Problems**: The initial PCV valve issue might have caused other components to fail or get damaged. For example, if the PCV valve was malfunctioning for a long time, it could have caused issues with the turbo, vacuum system, or other related systems. 8. **Boost Leaks**: Since the 2.0 TFSI engine is turbocharged, any issue with the PCV system could affect boost pressure. If there is a leak, it might lead to performance issues and errors. I recommend scanning the vehicle for error codes to get a more precise diagnosis. If the problem persists despite the new PCV valve, it might be worth consulting with a specialist familiar with Volkswagen engines to ensure that no other underlying issues are being overlooked.
Installing an oil catch can and performing an EGR (Exhaust Gas Recirculation) delete are popular modifications among turbocharged engine enthusiasts, particularly those with the 2.0 TFSI engine. These modifications can indeed help mitigate some of the common issues associated with the PCV system and EGR valve. Here's why these modifications worked for you: ### 1. **Oil Catch Can Installation:** - **Prevents Oil in the Intake System**: The oil catch can captures oil vapors and other contaminants before they can enter the intake system. This prevents oil from accumulating in the turbo hoses, intercooler, and intake manifold, which can lead to performance issues, rough idling, and smoke during acceleration. - **Improved Engine Performance**: By ensuring that only clean air reaches the turbo, the engine can perform more efficiently. This results in smoother acceleration and reduced risk of carbon buildup in the intake system. ### 2. **EGR Delete:** - **Reduces Soot and Carbon Buildup**: The EGR system recirculates a portion of the exhaust gases back into the intake, which can lead to carbon buildup over time. Deleting the EGR system prevents this buildup, leading to a cleaner intake tract and improved engine performance. - **Lower Intake Air Temperatures**: By eliminating the EGR system, the intake air remains cooler, which is beneficial for combustion efficiency and power output, especially in turbocharged engines. ### 3. **Improved Engine Longevity:** - **Cleaner Turbo System**: With the oil catch can in place and the EGR deleted, your turbo system is likely to stay cleaner, which reduces wear and tear on the turbocharger and related components. - **Less Oil Consumption**: As the catch can prevents oil from entering the intake, your engine may consume less oil, leading to longer intervals between oil changes and less frequent topping up of oil. ### 4. **Elimination of Common Issues:** - **Rough Idle**: The rough idle you experienced was likely due to oil and carbon buildup in the intake system. By installing the catch can and deleting the EGR, you've addressed the root cause of this problem. - **Blue Smoke on Startup**: Blue smoke is typically a sign of burning oil, which was likely being introduced into the intake through the PCV system. The catch can prevents this, eliminating the smoke. ### 5. **Cleaner Combustion:** - **Better Air-Fuel Mixture**: With only clean air entering the combustion chamber, the air-fuel mixture is more consistent, leading to more efficient combustion and better overall engine performance. Your approach has effectively addressed the common problems associated with the PCV and EGR systems in the 2.0 TFSI engine. While these modifications can provide significant benefits, it’s important to note that EGR deletes may not be legal in all regions due to emissions regulations. Always consider the legal implications of such modifications based on your location.
@@CLICKANDLEARNCh after i did my egr and pcv valve delete(bypass) i cleaned the intake hoses and air sensor with brake cleaner and let it dry for the next day. Today first start it stopped,then the second try my engine was revving like krazy like a runaway but no smoke and no oil in intake. Was it because maybe the brake cleaner didnt dry or gases from it didnt got out? Im scared to turn my car back on again now :(
@@nexuqk It is not recommended to use brake cleaner to clean the "air sensor" (MAF) because the sensorwire or sensorpad is very fragile. I´m sorry to say but maybe you destroyed your MAF sensor. Brake cleaner contains aggressive substances.
Great point! If the Positive Crankcase Ventilation (PCV) hose clamp isn’t properly tightened, it can lead to issues with the PCV system, causing poor functionality. A loose clamp might allow air to leak, which can affect engine performance and lead to symptoms like rough idling, increased oil consumption, or even check engine lights. 🔧 Thanks for adding this tip, and feel free to share more insights! 🚗💨 #PCVValve #CarMaintenance #EnginePerformance
A leak from the air intake or PCV (Positive Crankcase Ventilation) hose in your vehicle can potentially cause various problems, but the specific issues it might lead to can vary depending on the location and severity of the leak. Here are some general problems that can result from such leaks: Decreased engine performance: Air leaks in the intake system can allow unfiltered air to enter the engine, which can disrupt the air-to-fuel ratio and affect combustion. This may result in decreased engine power, rough idling, poor acceleration, and reduced fuel efficiency. Check engine light: A leak in the intake or PCV system may trigger the check engine light on your vehicle's dashboard. This can happen if the leak affects the proper functioning of sensors that monitor air intake or emissions. Poor fuel economy: Unmetered air entering the engine can lead to a lean air-fuel mixture, which may result in poor fuel economy as the engine tries to compensate by injecting more fuel. Increased emissions: Leaks in the PCV system can allow unfiltered crankcase gases to escape into the atmosphere, potentially increasing harmful emissions. This can also impact your vehicle's compliance with emissions regulations. Rough idling and stalling: Air leaks can disrupt the engine's idle stability and lead to rough idling or even stalling in extreme cases. Engine damage: In severe cases, prolonged exposure to unfiltered air or excessive oil vapor escaping from the PCV system can lead to engine damage over time. It's essential to address air intake and PCV hose leaks promptly to prevent these issues and maintain your vehicle's performance and reliability. The specific problems and their severity will depend on the size and location of the leaks, as well as the make and model of your vehicle. If you suspect such leaks, it's advisable to have a qualified mechanic inspect and repair the affected components to avoid potential damage and ensure your vehicle operates as intended. thank you
If engine oil is coming out of the dipstick tube, a bad PCV (Positive Crankcase Ventilation) valve could indeed be the culprit. Here’s how a faulty PCV valve could lead to the symptoms you’re seeing: ### Symptoms of a Bad PCV Valve: 1. **Oil Leaks and Oil Blowing Out of the Dipstick Tube**: When the PCV valve is stuck closed or clogged, it can’t vent the crankcase gases properly. This causes pressure to build up in the crankcase, forcing oil out of weak points like the dipstick tube, valve cover gaskets, or other seals. 2. **High or Rough Idle**: A stuck-open PCV valve can cause too much air to enter the intake, leading to a high or uneven idle. 3. **Whistling or Hissing Noise**: If the valve or related hoses are leaking, it can create a whistling sound, often noticeable at idle. 4. **Increased Oil Consumption and Possible Blue Smoke**: A stuck-open PCV can pull oil mist into the intake manifold, burning it and leading to blue smoke from the exhaust. 5. **Check Engine Light**: Lean codes or misfire codes (like P2187 in your case) can be triggered by a bad PCV valve as it disrupts the air-fuel mixture. ### Next Steps: 1. **Check the PCV Valve**: Remove the PCV valve and shake it. A functional valve will make a rattling sound. If it’s clogged or doesn’t rattle, it needs to be replaced. 2. **Inspect PCV Hoses**: Check for any collapsed or cracked hoses that could disrupt proper crankcase ventilation. 3. **Replace the Valve** (if needed): A new PCV valve is usually affordable and straightforward to replace. This simple replacement can relieve the crankcase pressure and prevent further oil from blowing out of the dipstick tube. Hopefully, this clears things up! Replacing the PCV should help reduce or stop oil from being forced out, but let me know if anything else is acting up.
Both the EGR (Exhaust Gas Recirculation) system and the PCV (Positive Crankcase Ventilation) valve are potential culprits for smoking issues in a car like your Audi A3. Here's a breakdown of each: EGR System: If the EGR system is malfunctioning, it could lead to excess exhaust gases being reintroduced into the combustion chamber, potentially causing smoke from the exhaust. Common symptoms of a faulty EGR system include rough idling, engine knocking, and decreased fuel efficiency. PCV Valve: A malfunctioning PCV valve can cause excessive pressure buildup in the crankcase, leading to oil leaks and ultimately smoke from the exhaust. Symptoms of a faulty PCV valve may include high oil consumption, rough idling, and poor engine performance. To determine which component is causing the smoking issue in your Audi A3, you may need to perform diagnostic tests or consult with a qualified mechanic. They can use diagnostic tools to check for fault codes and perform visual inspections of the EGR system and PCV valve. Additionally, they may conduct a compression test to assess the overall health of the engine. In any case, addressing the issue promptly is essential to prevent further damage to your vehicle and ensure its optimal performance.
Blue smoke from exhaust only at idle but never at cold start. Only idling for a bit like in traffic or at a stop? Could this be it? Wrx 2013 with brand new engine
Thank You For Your Feedback Sir! the blue smoke at idle in your 2013 WRX is likely not due to the PCV valve, which usually causes white smoke. It's important to consult a mechanic for a proper diagnosis, as it could indicate oil burning issues. Safe travels!
I have a 2.0 TSI with HF series oil catch can but still getting blue smoke from the exhaust, pcv valve and catch can bad? Should I try the racingline ones?
Sorry to hear you're still experiencing blue smoke despite using the HF series oil catch can. While the PCV valve and catch can could be potential culprits, it's essential to thoroughly diagnose the issue before considering replacements. Racingline catch cans may offer different features or performance, but they might not necessarily solve the underlying problem if it's related to another issue in the engine. I'd recommend consulting with a knowledgeable mechanic or specialist to diagnose the root cause accurately before investing in new parts. They can provide expert advice tailored to your specific situation. Best of luck in resolving the issue!
If you've already replaced the PCV (Positive Crankcase Ventilation) valve on your 2015 Navigator but are still encountering a trouble code, there are a few steps you can take to troubleshoot the issue: Double-Check Installation: Ensure that the new PCV valve was installed correctly and securely. Sometimes, improper installation can lead to continued issues. Inspect PCV System Components: Check the entire PCV system, including hoses, connectors, and the PCV valve itself, for any signs of damage, leaks, or blockages. Replace any damaged components and clear any blockages if found. Check for Vacuum Leaks: Vacuum leaks in the PCV system or elsewhere in the engine can cause issues with engine performance and trigger fault codes. Use a smoke test or other diagnostic methods to check for vacuum leaks and repair them as needed. Scan for Additional Codes: If you're still receiving a trouble code after replacing the PCV valve, use an OBD-II scanner to check for any additional codes. Sometimes, there may be other underlying issues contributing to the problem. Check Engine Performance: Monitor the engine's performance closely for any signs of abnormalities, such as rough idling, misfires, or excessive oil consumption. These symptoms can provide clues to help diagnose the root cause of the issue. Verify PCV Valve Compatibility: Ensure that the replacement PCV valve is compatible with your specific make and model of vehicle. Using an incorrect or incompatible PCV valve can lead to issues. Reset Fault Codes: After performing any maintenance or repairs, use an OBD-II scanner to clear the fault codes from the vehicle's computer. This will reset the system and allow you to monitor if the issue persists. Seek Professional Assistance: If you're unable to diagnose or resolve the issue on your own, it may be necessary to seek assistance from a qualified mechanic or dealership. They can perform a more thorough diagnostic scan and recommend appropriate repairs. By systematically checking these areas, you should be able to narrow down the cause of the persistent trouble code and take appropriate action to address it.
Thank you so much I'm at my end it doesn't show any of the problems that would say the new pcv is bad truck runs good my Mechanic says it may just be age and the 260,000 miles that it has and the dealer is just waiting to break my pockets You can't even tell it's running its so quite
I replaced mine about 3months ago.and no difference. Engine smokes at idle..blue smoke. Increased oil consumption. Heat in cabin esp from radio area...I got it from aliexpress.tho it was for a golf 4 and mine is lexus gs 2jz...any implications.
Could also be the breather pipe is also contaminated if that wasn't replaced with the valve and all indications were pointing to the valve being the issue.
Thank You For Your Feedback Sir! It can be a symptoms of bad PCV valve. also It can be Head Gasket Failure, Overfilled Engine Oil, Clogged Breather System, Worn Piston Rings, Damaged Valve Stem Seals or Worn Engine Seals or Gaskets. It is better to contact a mechanic.
I thought it was funny that the intake stacks in the opening photo had tennis balls in them. Obviously it’s in storage… Hopefully?…. Just don’t start the engine with them in ther. 😊
I've heard about malfunctioning PCV valves from a number of sources over the years, but never took the time to really dig into the specifics. Your detailed explanations of the possible impact of a failed PCV valve were super-clear and informative. I've been seeing light white smoke from my exhaust pipes over the past 10K miles or so, even when the engine is hot, which was one of the symptoms that you mentioned in your video. I'll be replacing the PCV valve to see if this corrects the problem. Thanks for your super-useful information!
Thanks for the comment. Smoke is one symptom. Open oil cap or dips stick and check the pressure
Did it fix it?
I just had my new bought 2015 Town & Country diagnostic test done by the Chrysler dealer and one of the items noted was PCV valve leaking. This repair cost me $319.00, of which $119.00 was for parts & $199.95 for labor. I truly did not realize how important this repair was. Thank you.
Thank you. You know now
Man, the part & hose would have costed you just under $50.00 ..
You could have saved so much money by doing it yourself.
It's really simple
@@Oden-Heinrich Nah, easily under $20.00. The pcv valve is like a $5 part alone at autozone for my vehicle. Dealerships are robbery.
@GLHF Yeah, they redesign the pcv valve for this engine.
It's 2 bolts opposed to 3.
The old hose also won't fit the new pcv valve, so you're buying a new hose as well. They both come to around $50-ish to buy as a pair, even at Autozone, for the Pentastar 3.6L ..
I'd never buy or take anything to a dealership other than for programming.
If you can find someone locally and pay $50 dollars for same work. Part is cheap and takes 10 minutes to change. Knowledge is power.
When a PCV valve malfunction, the usual sign is engine oil will accumulate at the air intake recirculation hose.
Your right. Too much pressure.
Will high pressure air come out of oil cap
@@stevechavez5882
If PCV value bad Most time sucking air in. But we found couple of vehicles air blowing out
@@stevechavez5882
Most time it’s suck in( when vehicles run very difficult to remove oil cap when PCV VALVE bad)
U dame great
Just cleaned, sealed and replaced all the parts to the breather box for the first time ever! 1995 Honda Del Sol Civic.
What are the benefits of doing this? Better Gas Mileage? More Horse Power?
It really seems to be running much smoother and so far I think it's getting better gas mileage.
Just did it a few days ago so haven't driven it much to know yet about gas mileage...
Wow. Good job
And
save money
Good experience
Thank you for much for sharing your experience
Well done
The PCV valve doesn’t allow fresh air in. It recirculates blow by gasses back into the manifold.
The intake breather hose brings in the fresh air.
Thank you for your comment! You're absolutely correct. The PCV (Positive Crankcase Ventilation) valve's primary function is to recirculate blow-by gases back into the intake manifold, which helps reduce emissions by reintroducing them into the combustion process. On the other hand, the intake breather hose is responsible for bringing fresh air into the crankcase to ensure proper ventilation and prevent pressure buildup. Both components work together to maintain engine efficiency and emissions control. Appreciate your input!
Like someone else commented, pull it out of the pan take it off the hose and spray brake kleen or whatevers' handy.
thanks for the comment
Excellent info. Very helpful. May God bless you.
Thank you very much for your comment. Really appreciated
May god bless you too
Will a faulty pcv valve release a burnt like smell through the exhaust? No visible smoke though.
Better to get professional advice. Some times vehicle has another issue sorry
Does a car have to have a check engine light come on for the PCV valve or can it just have problems without the check engine light?
Great question! No, a car doesn’t always have to trigger a check engine light for PCV (Positive Crankcase Ventilation) valve issues. A faulty PCV valve can cause problems without illuminating the check engine light. Symptoms might include:
Rough idling or stalling
Increased oil consumption or oil leaks
Sludge buildup in the engine
Poor fuel economy or power loss
If you’re noticing any of these signs, it’s a good idea to inspect the PCV valve even if the check engine light isn’t on. A simple check and replacement can often solve the issue and prevent bigger problems down the line. 🔧
Hope this helps, and feel free to ask if you have more questions! 🚗👍 #PCVValve #CarSymptoms #CarMaintenance
Years ago this was the engine crankcase breather pipe nothing more. New cars cannot breath and become unhealthy.
ChatGPT
The concept of an engine crankcase breather pipe, also known as a crankcase ventilation system or PCV (Positive Crankcase Ventilation) system, has evolved over the years in automotive design. Its primary purpose is to vent harmful gases and excess pressure from the engine's crankcase to prevent various issues such as excessive pressure buildup, oil contamination, and emissions of harmful pollutants.
In older vehicles, the crankcase breather pipe may have been a simple vent that released gases directly into the atmosphere, which could contribute to air pollution. Modern cars have more advanced PCV systems that route these gases back into the intake manifold to be burned in the combustion process. This helps reduce emissions and improve fuel efficiency.
If a modern car's PCV system is not functioning correctly, it can lead to various problems, such as increased oil consumption, reduced fuel efficiency, and potential damage to engine components. Regular maintenance and checking of the PCV system are essential to ensure the engine operates efficiently and cleanly.
It's essential to follow the manufacturer's recommended maintenance schedule and use quality parts and fluids to keep your car's engine in good health and minimize its impact on the environment. If you suspect your car's PCV system is not functioning correctly, it's advisable to have it inspected and repaired by a qualified mechanic
thank you very much for the feedback
really appreciated
Hey there! Thank you for this great video. I have a question: can a bad PCV go wrong and still not throw a code?
Hello! I'm glad you found the video helpful. To address your question, yes, it's possible for a malfunctioning Positive Crankcase Ventilation (PCV) valve to not always trigger a diagnostic trouble code (DTC). The PCV valve's primary function is to regulate the flow of gases between the crankcase and the intake manifold. If it fails or becomes clogged, it can cause various issues such as poor engine performance, increased oil consumption, rough idling, and even excessive smoke from the exhaust.
However, whether a PCV valve issue triggers a diagnostic trouble code depends on the vehicle's make and model, as well as the specific conditions of the malfunction. Some modern vehicles have sophisticated engine management systems that can detect certain faults and trigger corresponding codes, while others may not have sensors or monitoring systems in place specifically for the PCV valve.
Additionally, if the issue is intermittent or hasn't reached a threshold level of severity, it might not trigger a code immediately. It's also possible for a PCV valve problem to manifest in ways that aren't directly linked to a specific code, making diagnosis more challenging.
If you suspect a problem with your PCV valve but aren't seeing any codes, it's still worth investigating further, especially if you're experiencing symptoms like those mentioned earlier. Regular maintenance checks, including inspection and potential replacement of the PCV valve as part of routine service, can help prevent issues from escalating.
Thank You
متشکرم از شما آقای محترم .
Thank you very much
I have an exhaust smell (moreso on colder startups). PCV Valve changed a few months ago. A bit lower (than I expect) gas mileage. Will have to see if there is an exhaust leak somewhere
Could be exhaust. Could be fuel leak from injector seal or pipe
Did you reset your ECU afterwards? All the fuel trims stored in memory could well be for running with a failing pcv valve, resetting the ecu will allow everything to operate in the initial learning mode with the car components working as they should be.
@@thekhaosrider
Yes need to rest code. That’s it’s
Did u figure it out?
@kaytube5645 nope. I just have a Basic Bluetooth OBD2 reader. Not if if it truly resets the ECM (ad others have mentioned to do). Gonna try taking out the oxygen sensors and cleaning them (carefully) with some brake cleaner or throttle body cleaner (whichever is appropriate).
Else look at changing a mid pipe gasket or similar. Maybe change all bolts too, while I'm there.
EXCELLENT VID. Best explanation. Thank you!
Thank you so much! I'm glad you found the explanation helpful. Your support means a lot! If you have any other questions or need further clarification, feel free to ask.
What can make the oil cap filler and dip stick become under vacuum sort of sounds like a soda bottle being open after being shaken a lil or is it ment to be like that bmw m54
It sounds like you might be experiencing some pressure build-up or vacuum-related issues with your BMW M54 engine. When the oil cap filler and dipstick show signs of vacuum, it could indicate problems with the PCV (Positive Crankcase Ventilation) system or potentially other issues related to engine performance or seals. It's not necessarily "meant" to be like that, as excessive pressure or vacuum in the crankcase can lead to various problems, including oil leaks and decreased engine efficiency. It's advisable to have a qualified mechanic inspect your engine to diagnose and address any underlying issues.
@@CLICKANDLEARNCh yeah ot was the pcv system some how the rubber thing inside the pcv was split fixed now the a 3.2l pcv and oil catch can that returns back to the sump but since driving the car around with the bad pcv I now have a oil leak to the exhaust side on the face of the engine looks to be a either the exhaust cam sensor oring vanos solenoid ornig or vanos gasket (my opinion as noting is coming from valvw cover gasket
Hello I have Mercedes Vito Euro 6 diesel, and getting heavy greyish/bluish smoke from exhaust, I’ve changed DPF pressure sensor and cleaned the DPF filter, this lasted 1 day with no smoke, Now it’s back, I get a strong smell of oil aswell as smoke from exhaust, could it be bad PCV Valve?
Thanks for reaching out! From the symptoms you’ve described-heavy greyish/blue smoke and the strong smell of oil-it’s possible that a faulty PCV (Positive Crankcase Ventilation) valve could be the cause. A bad PCV valve can allow oil to enter the intake, leading to excessive oil burning, which results in smoke and the smell of oil from the exhaust.
However, since you’ve already cleaned the DPF and replaced the pressure sensor, it might also be worth checking the turbocharger seals or any other potential oil leaks, as these could also cause similar symptoms.
We’d be happy to take a closer look at SANU Motors if you need further diagnosis. Feel free to bring your Mercedes Vito by the garage for a more thorough inspection. Thanks again for your question, and we hope to help you get this resolved!
This is most likely the injectors.. Vito is known for it. Nickname is the black death. Get your injectors looked at
PCV are inexpensive and should be changed every five years anyways. While you do your basic tune up change the ERG valve at the same time along with the air cleaner and oil change. The MAF sensor is typically OK but can also be cleaned at this time with just 50% rubbing alcohol in a spray bottle. After cleaning the MAF sensor just let the MAF sensor dry itself in the sun for 30 minutes before reinstalling. No need to buy that expensive MAF sensor cleaner at the auto-parts store.
Thank you for sharing these helpful tips! Regular maintenance is key to keeping our vehicles running smoothly. Changing the PCV valve every five years, along with other components like the EGR valve, air cleaner, and performing an oil change, is a great practice to ensure optimal engine performance and emissions control. Cleaning the MAF sensor with rubbing alcohol is a cost-effective solution, and letting it dry in the sun is a smart way to ensure proper reinstallation without needing to invest in expensive MAF sensor cleaners. Your advice will surely help many DIY enthusiasts keep their vehicles in top shape without breaking the bank. Appreciate your contribution!
I have changed mine because it was giving me problems a bunch of problems. After putting the new oem pcv it was driving great for one day but the next day the problems and error came back, what it might be?
Scirocco 2.0tfsi 2009
Just get a oil catch can- no more oil and gases in the turbo,while still getting out the pressure and vapor. Ive done this and egr delete and now my car pulls just clean air in the turbo. Before all my turbo hoses were with oil on them+the intercooler,rough idle and was accelerating at start with blue smoke of oil. Now all the problems are gone.
When you replace the PCV (Positive Crankcase Ventilation) valve in your 2009 Scirocco 2.0 TFSI and experience problems and error codes the following day, it could be due to several reasons:
1. **Defective or Incorrect PCV Valve**: Even though you installed a new OEM PCV valve, it's possible that the part is defective. Manufacturing defects can occur even with new parts. Double-check that the part number matches the specific requirements for your vehicle.
2. **Installation Issues**: If the PCV valve wasn't installed correctly, it might not be sealing properly or could be loose, leading to continued issues. Verify that the PCV valve is seated properly and that all connections are secure.
3. **Related Components**: The PCV system involves several components, including hoses, seals, and connections. If there’s a crack or leak in any of these, it could cause problems similar to those experienced before replacing the PCV valve. Inspect the surrounding components for any signs of wear or damage.
4. **Engine Oil**: Sometimes, a faulty PCV valve can cause excess oil consumption or oil contamination in the intake system. If there's oil in the intake, it might be necessary to clean the intake system, throttle body, and related components to resolve the issue.
5. **Check Engine Light Codes**: If the error returned, the car's ECU (Engine Control Unit) might have stored specific codes that could help diagnose the issue. Reading these codes with an OBD-II scanner can provide insights into what's going wrong.
6. **Software/ECU Issues**: Occasionally, the ECU might need a reset or an update after replacing certain components like the PCV valve. Consider resetting the ECU or having it checked for any required updates.
7. **Secondary Problems**: The initial PCV valve issue might have caused other components to fail or get damaged. For example, if the PCV valve was malfunctioning for a long time, it could have caused issues with the turbo, vacuum system, or other related systems.
8. **Boost Leaks**: Since the 2.0 TFSI engine is turbocharged, any issue with the PCV system could affect boost pressure. If there is a leak, it might lead to performance issues and errors.
I recommend scanning the vehicle for error codes to get a more precise diagnosis. If the problem persists despite the new PCV valve, it might be worth consulting with a specialist familiar with Volkswagen engines to ensure that no other underlying issues are being overlooked.
Installing an oil catch can and performing an EGR (Exhaust Gas Recirculation) delete are popular modifications among turbocharged engine enthusiasts, particularly those with the 2.0 TFSI engine. These modifications can indeed help mitigate some of the common issues associated with the PCV system and EGR valve. Here's why these modifications worked for you:
### 1. **Oil Catch Can Installation:**
- **Prevents Oil in the Intake System**: The oil catch can captures oil vapors and other contaminants before they can enter the intake system. This prevents oil from accumulating in the turbo hoses, intercooler, and intake manifold, which can lead to performance issues, rough idling, and smoke during acceleration.
- **Improved Engine Performance**: By ensuring that only clean air reaches the turbo, the engine can perform more efficiently. This results in smoother acceleration and reduced risk of carbon buildup in the intake system.
### 2. **EGR Delete:**
- **Reduces Soot and Carbon Buildup**: The EGR system recirculates a portion of the exhaust gases back into the intake, which can lead to carbon buildup over time. Deleting the EGR system prevents this buildup, leading to a cleaner intake tract and improved engine performance.
- **Lower Intake Air Temperatures**: By eliminating the EGR system, the intake air remains cooler, which is beneficial for combustion efficiency and power output, especially in turbocharged engines.
### 3. **Improved Engine Longevity:**
- **Cleaner Turbo System**: With the oil catch can in place and the EGR deleted, your turbo system is likely to stay cleaner, which reduces wear and tear on the turbocharger and related components.
- **Less Oil Consumption**: As the catch can prevents oil from entering the intake, your engine may consume less oil, leading to longer intervals between oil changes and less frequent topping up of oil.
### 4. **Elimination of Common Issues:**
- **Rough Idle**: The rough idle you experienced was likely due to oil and carbon buildup in the intake system. By installing the catch can and deleting the EGR, you've addressed the root cause of this problem.
- **Blue Smoke on Startup**: Blue smoke is typically a sign of burning oil, which was likely being introduced into the intake through the PCV system. The catch can prevents this, eliminating the smoke.
### 5. **Cleaner Combustion:**
- **Better Air-Fuel Mixture**: With only clean air entering the combustion chamber, the air-fuel mixture is more consistent, leading to more efficient combustion and better overall engine performance.
Your approach has effectively addressed the common problems associated with the PCV and EGR systems in the 2.0 TFSI engine. While these modifications can provide significant benefits, it’s important to note that EGR deletes may not be legal in all regions due to emissions regulations. Always consider the legal implications of such modifications based on your location.
@@CLICKANDLEARNCh after i did my egr and pcv valve delete(bypass) i cleaned the intake hoses and air sensor with brake cleaner and let it dry for the next day. Today first start it stopped,then the second try my engine was revving like krazy like a runaway but no smoke and no oil in intake. Was it because maybe the brake cleaner didnt dry or gases from it didnt got out? Im scared to turn my car back on again now :(
@@nexuqk It is not recommended to use brake cleaner to clean the "air sensor" (MAF) because the sensorwire or sensorpad is very fragile. I´m sorry to say but maybe you destroyed your MAF sensor. Brake cleaner contains aggressive substances.
Positive Crank Case Hose Clamp not tight will not function properly.
Great point! If the Positive Crankcase Ventilation (PCV) hose clamp isn’t properly tightened, it can lead to issues with the PCV system, causing poor functionality. A loose clamp might allow air to leak, which can affect engine performance and lead to symptoms like rough idling, increased oil consumption, or even check engine lights. 🔧
Thanks for adding this tip, and feel free to share more insights! 🚗💨 #PCVValve #CarMaintenance #EnginePerformance
If there is a leak from the air intake and pcv hose, would it cause the same problems ?
A leak from the air intake or PCV (Positive Crankcase Ventilation) hose in your vehicle can potentially cause various problems, but the specific issues it might lead to can vary depending on the location and severity of the leak. Here are some general problems that can result from such leaks:
Decreased engine performance: Air leaks in the intake system can allow unfiltered air to enter the engine, which can disrupt the air-to-fuel ratio and affect combustion. This may result in decreased engine power, rough idling, poor acceleration, and reduced fuel efficiency.
Check engine light: A leak in the intake or PCV system may trigger the check engine light on your vehicle's dashboard. This can happen if the leak affects the proper functioning of sensors that monitor air intake or emissions.
Poor fuel economy: Unmetered air entering the engine can lead to a lean air-fuel mixture, which may result in poor fuel economy as the engine tries to compensate by injecting more fuel.
Increased emissions: Leaks in the PCV system can allow unfiltered crankcase gases to escape into the atmosphere, potentially increasing harmful emissions. This can also impact your vehicle's compliance with emissions regulations.
Rough idling and stalling: Air leaks can disrupt the engine's idle stability and lead to rough idling or even stalling in extreme cases.
Engine damage: In severe cases, prolonged exposure to unfiltered air or excessive oil vapor escaping from the PCV system can lead to engine damage over time.
It's essential to address air intake and PCV hose leaks promptly to prevent these issues and maintain your vehicle's performance and reliability. The specific problems and their severity will depend on the size and location of the leaks, as well as the make and model of your vehicle. If you suspect such leaks, it's advisable to have a qualified mechanic inspect and repair the affected components to avoid potential damage and ensure your vehicle operates as intended.
thank you
Bro is that the bad pcv! And my car engine oil came out from dipstick and spread away
If engine oil is coming out of the dipstick tube, a bad PCV (Positive Crankcase Ventilation) valve could indeed be the culprit. Here’s how a faulty PCV valve could lead to the symptoms you’re seeing:
### Symptoms of a Bad PCV Valve:
1. **Oil Leaks and Oil Blowing Out of the Dipstick Tube**:
When the PCV valve is stuck closed or clogged, it can’t vent the crankcase gases properly. This causes pressure to build up in the crankcase, forcing oil out of weak points like the dipstick tube, valve cover gaskets, or other seals.
2. **High or Rough Idle**:
A stuck-open PCV valve can cause too much air to enter the intake, leading to a high or uneven idle.
3. **Whistling or Hissing Noise**:
If the valve or related hoses are leaking, it can create a whistling sound, often noticeable at idle.
4. **Increased Oil Consumption and Possible Blue Smoke**:
A stuck-open PCV can pull oil mist into the intake manifold, burning it and leading to blue smoke from the exhaust.
5. **Check Engine Light**:
Lean codes or misfire codes (like P2187 in your case) can be triggered by a bad PCV valve as it disrupts the air-fuel mixture.
### Next Steps:
1. **Check the PCV Valve**:
Remove the PCV valve and shake it. A functional valve will make a rattling sound. If it’s clogged or doesn’t rattle, it needs to be replaced.
2. **Inspect PCV Hoses**:
Check for any collapsed or cracked hoses that could disrupt proper crankcase ventilation.
3. **Replace the Valve** (if needed):
A new PCV valve is usually affordable and straightforward to replace. This simple replacement can relieve the crankcase pressure and prevent further oil from blowing out of the dipstick tube.
Hopefully, this clears things up! Replacing the PCV should help reduce or stop oil from being forced out, but let me know if anything else is acting up.
@@CLICKANDLEARNCh thanks bro ❤
@@CLICKANDLEARNCh thanks bro ❤
hi so i have a audi a 3 i have bought and its smoking out the exhaust im thinking its egr but it could be the pcv valve gone what so do u recon
Both the EGR (Exhaust Gas Recirculation) system and the PCV (Positive Crankcase Ventilation) valve are potential culprits for smoking issues in a car like your Audi A3. Here's a breakdown of each:
EGR System: If the EGR system is malfunctioning, it could lead to excess exhaust gases being reintroduced into the combustion chamber, potentially causing smoke from the exhaust. Common symptoms of a faulty EGR system include rough idling, engine knocking, and decreased fuel efficiency.
PCV Valve: A malfunctioning PCV valve can cause excessive pressure buildup in the crankcase, leading to oil leaks and ultimately smoke from the exhaust. Symptoms of a faulty PCV valve may include high oil consumption, rough idling, and poor engine performance.
To determine which component is causing the smoking issue in your Audi A3, you may need to perform diagnostic tests or consult with a qualified mechanic. They can use diagnostic tools to check for fault codes and perform visual inspections of the EGR system and PCV valve. Additionally, they may conduct a compression test to assess the overall health of the engine.
In any case, addressing the issue promptly is essential to prevent further damage to your vehicle and ensure its optimal performance.
Blue smoke from exhaust only at idle but never at cold start. Only idling for a bit like in traffic or at a stop? Could this be it? Wrx 2013 with brand new engine
Thank You For Your Feedback Sir! the blue smoke at idle in your 2013 WRX is likely not due to the PCV valve, which usually causes white smoke. It's important to consult a mechanic for a proper diagnosis, as it could indicate oil burning issues. Safe travels!
Coolant
@@wendy8875 nope was bad valve seals
@@wendy8875 coolant is white btw
@@RacingCoco thanks for the info
I have a 2.0 TSI with HF series oil catch can but still getting blue smoke from the exhaust, pcv valve and catch can bad?
Should I try the racingline ones?
Sorry to hear you're still experiencing blue smoke despite using the HF series oil catch can. While the PCV valve and catch can could be potential culprits, it's essential to thoroughly diagnose the issue before considering replacements. Racingline catch cans may offer different features or performance, but they might not necessarily solve the underlying problem if it's related to another issue in the engine. I'd recommend consulting with a knowledgeable mechanic or specialist to diagnose the root cause accurately before investing in new parts. They can provide expert advice tailored to your specific situation. Best of luck in resolving the issue!
I have a 2015 navigator i got the pcv valve changed but im still getting a code,help please
If you've already replaced the PCV (Positive Crankcase Ventilation) valve on your 2015 Navigator but are still encountering a trouble code, there are a few steps you can take to troubleshoot the issue:
Double-Check Installation: Ensure that the new PCV valve was installed correctly and securely. Sometimes, improper installation can lead to continued issues.
Inspect PCV System Components: Check the entire PCV system, including hoses, connectors, and the PCV valve itself, for any signs of damage, leaks, or blockages. Replace any damaged components and clear any blockages if found.
Check for Vacuum Leaks: Vacuum leaks in the PCV system or elsewhere in the engine can cause issues with engine performance and trigger fault codes. Use a smoke test or other diagnostic methods to check for vacuum leaks and repair them as needed.
Scan for Additional Codes: If you're still receiving a trouble code after replacing the PCV valve, use an OBD-II scanner to check for any additional codes. Sometimes, there may be other underlying issues contributing to the problem.
Check Engine Performance: Monitor the engine's performance closely for any signs of abnormalities, such as rough idling, misfires, or excessive oil consumption. These symptoms can provide clues to help diagnose the root cause of the issue.
Verify PCV Valve Compatibility: Ensure that the replacement PCV valve is compatible with your specific make and model of vehicle. Using an incorrect or incompatible PCV valve can lead to issues.
Reset Fault Codes: After performing any maintenance or repairs, use an OBD-II scanner to clear the fault codes from the vehicle's computer. This will reset the system and allow you to monitor if the issue persists.
Seek Professional Assistance: If you're unable to diagnose or resolve the issue on your own, it may be necessary to seek assistance from a qualified mechanic or dealership. They can perform a more thorough diagnostic scan and recommend appropriate repairs.
By systematically checking these areas, you should be able to narrow down the cause of the persistent trouble code and take appropriate action to address it.
Thank you so much I'm at my end it doesn't show any of the problems that would say the new pcv is bad truck runs good my Mechanic says it may just be age and the 260,000 miles that it has and the dealer is just waiting to break my pockets
You can't even tell it's running its so quite
Thanks sir
Your welcome
Easily cleaned or replaced.
Yes sometimes
I replaced mine about 3months ago.and no difference. Engine smokes at idle..blue smoke. Increased oil consumption. Heat in cabin esp from radio area...I got it from aliexpress.tho it was for a golf 4 and mine is lexus gs 2jz...any implications.
You need to check with professional. Could be something developing there.
Could also be the breather pipe is also contaminated if that wasn't replaced with the valve and all indications were pointing to the valve being the issue.
@@CLICKANDLEARNCh oil in my intake hose....
My vehicle smoke when the engine sits for awhile and it also loses oil
Thank You For Your Feedback Sir! It can be a symptoms of bad PCV valve. also It can be Head Gasket Failure, Overfilled Engine Oil, Clogged Breather System, Worn Piston Rings, Damaged Valve Stem Seals or Worn Engine Seals or Gaskets. It is better to contact a mechanic.
I thought it was funny that the intake stacks in the opening photo had tennis balls in them. Obviously it’s in storage… Hopefully?…. Just don’t start the engine with them in ther. 😊
Thank you for feedback
أحسنت
I’m not sure what you says.
Thank you
He said “well done” 👏🏼
@@zouhairfarahat1540
Thank you
I got scared the head gasket was blown
I know that feeling! It's like waiting for a scary movie to reveal the twist-except your wallet is the one that gets scared!
Cant stand these AI voices
thanks for the feedback
Dodnt know it causes misfire
Yes some time looks misfire. Because of air pressure
Martin Charles Martin Timothy Jones Jason
Thank you
It’s like the fart of the car
Your right ✅