The Easiest Way to Set Valve Clearances!
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- เผยแพร่เมื่อ 23 ก.ย. 2024
- This is how I adjust Valve Clearances, which is simple to understand and perform.
Full Video Here: • The Only Video You'll ...
Introducing my other Channel "Things to Know" - which i'm just getting started. It's a go-to channel for insightful worldly explanations, handy tips, and expert advice on everyday things and repairs of domestic items. Here is the link: / @thingstoknow3645
An internal combustion engine needs regular maintenance, which includes adjusting the valve clearances, to operate at its best and last the longest. A specialised cut-out engine, such as the one I made and show in this video, can be a very helpful tool to improve comprehension and streamline the learning process.
Understanding Valve Clearance: When a valve is entirely closed, there is a space between the valve stem and the matching rocker arm or cam follower. This area permits thermal expansion while ensuring adequate valve performance. Inadequate valve clearances can have a negative impact on the dependability, fuel economy, and performance of an engine.
Correct valve clearance settings are crucial.
For a number of reasons, precise valve clearance settings are essential.
a) Correct Engine Operation: Optimal valve clearances provide accurate valve timing, maximising engine efficiency and power output.
b) Lessened Mechanical Stress: Appropriate clearances reduce noise from the valve train, excessive wear, and potential valve-to-piston interference, which can result in catastrophic engine failure.
c) Increased Fuel Economy: Proper valve clearance settings encourage effective combustion, which raises fuel economy and lowers emissions.
d) Consistent Performance: Keeping accurate valve clearances over time aids in preserving consistent engine performance.
The Cut-Out Engine: A Useful Learning Instrument
An engine that has been specially modified, such as the one in this video, to enable visual inspection of internal parts such valves, camshafts, and rocker arms is called a cut-out engine. This clear view offers priceless insights into how these components function and interact during the four-stroke cycle. People can better grasp how valve clearances impact engine performance by using a cut-out engine.
Benefits of Using a Cut-Out Engine for Learning:
There are many benefits to learning valve clearance adjustment with a cut-out engine:
a) Visual Clarity: Learners can better understand how clearances effect valve movement and timing by watching the valve train's components in action.
b) Hands-On Experience: Learners can gain a tactile grasp of the adjustment process by manipulating the valves and watching how they behave.
c) Troubleshooting Techniques: Using a cut-out engine makes it simpler to spot anomalous valve behaviour, such as excessive noise or inadequate valve lift.
d) Confidence Building: Learning via hands-on experience with a cut-out engine gives students the confidence they need to set valve clearances more precisely.
In conclusion, sustaining engine performance and longevity requires mastering the art of valve clearance adjustment. Using a cut-out engine offers a rare chance to view and comprehend the complicated operations of the valve train, improving our comprehension of how clearances affect engine performance. It is possible for enthusiasts and aspiring technicians to improve their abilities and assure exact valve clearance settings for the best engine performance by gaining practical experience and knowledge through this practical approach.
Many thanks for watching and reading
Craig (Owner and Creator of The Repair Specialist Channel)
#ValveClearance
#EngineMaintenance
#CutOutEngine
#EngineLearning
#ValveAdjustment
#EnginePerformance
#HandsOnLearning
#MechanicalUnderstanding
#EngineEfficiency
#InternalCombustion
#EngineComponents
#MaintenanceSkills
#LearningExperience
#EngineRepair
#AutomotiveEducation
I smoke ALOT of weed and my memory isn’t as good along with the fact I’m a visual learner. Your tutorial was very concise with amazing clarity. I’ll never forget this.
Thank you for your kind feedback. Craig
You sacrificed one of your engine to give knowledge to people. Thank you so much.
Your cut away engine is just amazing. I feel like I could just stare at it. Most of the engines I work on are the Briggs with the over head valves and the plastic carbs. This helps me understand the whole system perfectly. Thank You!
I'm absolutely thrilled to hear that you're loving the cut-away engine! 😃 It's fantastic to know that it's been so helpful in enhancing your understanding of engine systems, especially with the more modern Briggs engines. Your appreciation and kind words mean a lot to me, and I'm here to provide more insights and information whenever you need it. Keep up the great work, and being happy tinkering with those engines! Craig
Absolutely impressive demonstration
You Sir, Have a Gift ! You are an exceptional Instructor !!! 😉👍
Wow, thank you!
As usual you are the very best.
Your explanations are unparalleled.
Thank you.
Thank you so much for a crystal clear explanation and demonstration of adjusting valves. I learn so much from your videos. Keep up the great work:)
Thank you so much it was a fantastic insight into adjusting the valves.
Very welcome
Sooper.... Sir...... Nice teaching... I am from india.... Thanks sir....
Awesome thank you very much Sir
thank you for this video, didn't understand what was being adjusted untill now.
Thank you so much 👍👍👍
Best video on this topic. I have watched a lot and I'm very stingy with my compliment. Infact you are the only one that deserves a compliment. I bet you were once a teacher
This is great. Currently I'm working on cleaning my dirty valves, and wanted to know how to get the clearance right upon reinstall. I'm a very visual learner so seeing your cut engine block was great help, thank you!
Wonderful. Thank you so much!!
That was awesome thanks so much! I have an Allis Chalmers 170 from the early 70ties and I'm replacing the valve cover gasket, so while I'm in there I will attempt to set the valve lash to factory spec again. Your video helped immensely on accomplishing this. Much appreciated, merry xmas
Awesome. Thank you 👍👍
this is fantastic. this one is definitely for the analytical minds that want to know the "why?"
thanks brother.
Thank you Sir,
New Orleans, Louisiana here !!
It's an honor to be the first comment in those fantastic videos.
Probably the best out there in all the www in this world of small gasoline engines
¡Gracias por compartir!
I'm learning new things every day.
Nice 👍
Good video, good detailed information, thanks
Very good. Excellent for the novice DIYer.
Awesome video explaining why and how. My old marine diesel engine does not have a spark plug to check the TDC. Do you have any practical advice for finding the TDC on diesel engines?
Finding Top Dead Center (TDC) on a diesel engine without a spark plug hole can be a bit more challenging, but it's still possible using various methods. Here are some practical ways to locate TDC on a diesel engine:
Manufacturer's Manual: Check if there's a manufacturer's manual for your specific marine diesel engine. It might provide instructions or diagrams to help you locate TDC.
Crankshaft Markings: Many diesel engines have markings or notches on the crankshaft pulley or flywheel to indicate TDC. You might need to remove an access cover or inspect the engine from below to see these markings. Use a timing light or a simple timing tool to align the marks with a reference point.
Dial Indicator: A dial indicator is a precision tool that measures piston movement within the cylinder. You can attach it to the engine and rotate the crankshaft by hand. The indicator will show when the piston reaches its highest point (TDC).
Valve Lash Method: If you need to adjust the inlet and exhaust valves, you can use the valve lash method. Rotate the engine slowly by hand until the intake and exhaust valves are both closed for the cylinder you're working on. At this point, the piston should be very close to TDC, and you can make fine adjustments from there.
Compression Stroke Method: If you have access to the camshaft, you can determine TDC by observing the position of the cam lobes. The piston is at TDC when both valves for a particular cylinder are fully closed and the cam lobes are not pushing on the valve lifters.
Trial and Error: If none of the above methods work, you can use a trial-and-error approach. Slowly turn the engine by hand while observing the movement of the valves or the compression gauge. When both valves are closed and the engine seems to resist turning, you are likely close to TDC. Fine-tune from there.
Remember that it's essential to be patient and cautious when attempting to locate TDC. Rotating the engine slowly by hand to avoid any damage and using tools carefully is crucial. Additionally, ensure the engine is in neutral or properly secured to avoid accidents. If you're not confident in your ability to find TDC, it's best to consult a professional mechanic or service manual for your specific engine.
I hope this helps a little
Craig
@TheRepairSpecialist Thanks for your detailed answer. I have checked the manual of my 50 year old Volvo Penta MD2B. Using your valve and lash method, I have found the TDC which is between the closure of exhaust and opening of the intake valve (the valves rock one after another). Based on the info from the manual, I made one full rotation to bring the piston to the TDC of compression cycle where both valves were completely closed. I adjusted the valves at this point. Many thanks again.
Thanks for a great explanation 😊
ODLICNI STE,POTPUNO OBJASNJENO.
Very concise explanation thank you!
Thank you so much
I had a GS1000 BMW that would need adjustment every month. I did a few, but if I took it to the dealer it would come back perfectly adjusted, I never knew how he did it so perfectly. Maybe 8 hrs daily had something to do with developing skill. I drive a Tesla today, these are but distant memories, of course. Thanks for the detailed explanation.
I have to do a head gasket on an old three cylinder diesel and this basic instruction helped.
Good work,bro
Thank you so much 😀
I'm going to tackle my Fit's valves this weekend. Scary for me to open the valve cover on my only form of transportation but my baby needs it. Wish me luck!
If you have a manual car a good way to move the engine in to put it in forth and move it forward and backwards with out the key being on
Hi
thank you for sharing your tip about adjusting valve clearances in a manual car by moving it forward and backward without the key being on. This is indeed a clever method to rotate the engine for valve adjustments without the engine running.
For those who may be unfamiliar, this technique involves putting the car in gear (such as first or fourth gear) and then physically moving the car by pushing it back and forth. This action rotates the engine's crankshaft, allowing access to different valve positions for adjustment without needing to start the engine.
Adjusting valve clearances is an important maintenance task for ensuring optimal engine performance and longevity, and your tip offers a practical approach for completing this task safely and efficiently.
As always, when working around a vehicle, it's essential to prioritize safety by engaging the parking brake, ensuring the car is on a level surface, and taking necessary precautions to prevent accidents.
Thank you for sharing this helpful advice with our community. If you have more tips or questions related to engine maintenance, feel free to reach out. Your contributions are valued and appreciated!
Best regards,
Craig
Craig that is one sweet teaching aid. Did you cut it apart ? Thanks for sharing. 👍. Artie
Thanks again Artie. Yes I actually videoed myself taking it from an old wrecked mower and making it. Ive put it here on the channel and ive included the link if you want to see it. Thanks again. Craig
Link: th-cam.com/video/b78Uh1c8sy0/w-d-xo.html
@@TheRepairSpecialist thanks Craig I will definitely watch it 👍
Thanks for the video
👍👍👍
How do you compute the right valve clearance if you used higher cam lift?
Well Its just a case of using the correct specs from the manufacturer really. Taking a look at the owners/service manual
Nice video sir.... 👍
Thanks and welcome
Great to watch and learn 👍🇦🇺
Great you're really know what you are doing and 👍👍how you doing it
love the video and how you mad it so easey to understand how to set the valve thanks
Thank you great one.
Quality video thanks
Thanks
great video thanks
You are welcome! 👍👍👍
Well done 👍👍👍
Thank you very much 👍👍👍👍
you're amazing for these videos, thank you
You're very welcome! 👍
You did a good job sir ❤
Thank you so much, saved a mechanic idiot like me
Great video.
Love the content! Keep it coming!!
Thank you! Will do! And thank you for your kind feedback. Craig
thank you for all the information you are providing. I have a 4 stroke small engine. The recoil string pulls freely when I remove the spark plug. It is very difficult to pull with the spark plug on. What can be wrong? Your advice is greatly appreciated.
very good
Thank you! Cheers!
Excuse me sir. Do you prefer Adjust valve on coprresur stroke or TDC
good on you,,friend
Thanks for sharing. Question: so if piston is full visible does that mean that valves are ready for adjustment. (can a light be use to see the piston position ) please correct me if wrong. Again thanks and God Bless
Outstanding, Thank you!!!
Very good thanks sir
Thank you so much for this video! I was able to replace a broken exhaust valve and set the valve lash on my mower.
I have a couple questions, could incorrect valve lash have caused the exhaust valve to break? The stem broke about quarter inch from the valve lid and was just sitting on the piston head when I took the cylinder head off.
Also, is it a good idea to check the valve lash on a new mower before first use?
Thanks again for your invaluable channel!
thank you for watching and I'm thrilled to hear that the video helped you successfully replace the exhaust valve and set the valve lash on your mower!
Regarding your questions, incorrect valve lash can indeed lead to various issues, including potential valve damage over time. When the valve lash (the clearance between the valve stem and the rocker arm or camshaft) is too tight or too loose, it can impact how the valve operates within the engine. If the clearance is too tight, the valve may not fully close, leading to overheating and potential failure. Conversely, excessive clearance can cause noisy operation and inefficient valve timing.
In your case, the broken exhaust valve could have been a result of incorrect valve lash, especially if the valve was not seating properly due to inadequate clearance. This can lead to excessive wear and stress on the valve, ultimately resulting in failure.
As for checking valve lash on a new mower before first use, it's generally a good practice if the manufacturer recommends it in the owner's manual. New engines can sometimes require initial adjustments as they settle in and parts wear in. Checking and adjusting the valve lash as per manufacturer specifications can help ensure optimal performance and longevity of your mower's engine.
I'm glad to hear you find the channel valuable, and thank you for your thoughtful questions! If you have any further inquiries or need more assistance, feel free to reach out. Keep up the great work maintaining your mower, and happy mowing!
Best regards,
Craig
You also dont want to set the valve lash on the compression release on these engines.. some of them have one for easier starting especialy on those with a pullstart only.. the exhaust valve opens, then the intake and slightly after the intake, the exhaust valve opens just a hair and that is the compression release!
On Briggs and Stratton flathead engines there usually is no adjustment or you have to play with some shims!
Thank you!
Hello,
The videos posted by you are very interesting and educational, congratulations for the work done.
I also encountered the following problem with a 4-stroke chainsaw (clone engine after the Honda GX35). When starting from cold, everything is ok, but after a few minutes of operation, not in a very intensive mode, the chainsaw gets very hot, sometimes it stops by itself. Even if it doesn't stop by itself, restarting is very difficult, sometimes it doesn't work at all, sometimes the air filter gets wet with gasoline. In the settings from the manufacturer, the valve distance is set to 0.08 at the inlet and 0.11 at the outlet, I found the outlet at 0.25, I adjusted it to 0.11 but the same behavior. Do you think it's a problem with the carburetor or the existence of fake air?
The flywheel will be turn right or left?
And what are some other options to use if there is no proper tool like feelergage?
Thank you
Hi amazing way to explain I need some help I have ktm sxf 250cc 2012 it kick starts good runs for 20sec then dies fuel pump great injectors great could it be my valves
Thank you so much!
Good day, how would I go determining which valve lash should I use for an engine with aftermarket cylinder heads , aftermarket cam and rocker (motorcycle converted from 2 valves to 4 valves), is there a way to determine which lash should I use as there is no instruction anywhere its a completely self built engine?
Not trying to be a smart Alec; is it necessary to take account of valve overlap? EG adjusting the inlet when the exhaust valve just starts to open, and the exhaust valve when the intake just starts to close? I've heard this argued on another video and I'm not sure if this is over-complicating things? Or does setting the manufacturer's setting at TDC take into account overlap?
Hi! Thanks for your question and for watching my video.
When adjusting the tappets and valving system on a small petrol lawnmower engine, the manufacturer's recommendation to set them at Top Dead Center (TDC) generally simplifies the process and ensures accuracy. At TDC, both the intake and exhaust valves are closed, eliminating the need to account for valve overlap.
Valve overlap, which occurs when both the intake and exhaust valves are open simultaneously, is more relevant in high-performance engines where precise timing adjustments are crucial. For most small lawnmower engines, adjusting the valves at TDC, as per the manufacturer’s instructions, should be sufficient and effective.
So, unless you're dealing with a specialized engine, setting the valves at TDC should work perfectly fine and avoid over-complicating the adjustment process.
I hope this helps clarify things!
Thanks
Craig
@@TheRepairSpecialist It does Craig. Mustard! 👍👍👍
Greg, I got a predator 212 that just quit working or running actually so I’ve been adjusting the vowels and adjusting the valves and adjusting the valves. All wants to do is backfire or after fire. What do I do now?
Bro. i have a problem in 58cc chinese chainsaw when getting heat its hard to start it again .. why? .. sorry for disturbing.. 😁😁
This is great. At least now I can say I u sweat and the process a little more and can now make a more educated decision on whether or not I’ll do this $1000+ job myself or not.
Legend 👍👍👍
Thank you sir
very helpfull. God bless you in the name of Jesus bro
Outstanding
I watched your vid just now..could you alive me in any way, iv been told my tapets space is correct but if I listen to the top of my engine ..i can clearly hear a rattle ir lower tapping sound over on one area , the inlet side, I have used a a stethoscope, to listen, my engine is..push rod.. its a citreon u25 1993.. its driveinging me mad.. is there any way the rod might be worn, and can this part be changed..do you know. Any tips would be so helpful to me
I have a 1999 r6 , carbed . Carbs balanced , bike runs well but there is ticking from rocker area in low revs and also if riding in town slowly the bike loses a bit of oomph .. until i take it out big roads and blast it then the bike runs great again . Could this be a valve clearance issue ?
Yeah video was excellent
hi i was told by the dealer to not touch my engine...I have a toyota yaris and i believe it has buckets as for lifters.. I can hear a very faint background tok..but goes away the minute i give it some gas. Sounds more like injectors. its a 2011 yaris with very low mileage.
Whats the proper clearance for small engine 49cc
You need to check with your engines manufacturer specifications in the service manual. If you no longer have this then you can usually find one online if you put your engine make and model in the search engine. Make sure you have the correct manual though. 👍
Piston broke ; happened more than once, growing up as a ' teen ' ager......back '' in the day ''. Drunk - on the side of the road , car won't start....near the Indian Reserve.........ha. So there, RocBoyUniGee 585. .....anyone else, got some old ' stories '...
I do this, but it still taps, like a valve is too loose
nc 1
🤙🏻💯💚😀
Liked and subscribed. I got an atv engine that cranks but wont start. I got gas and spark but air compression is very low so i was looking to find a video that explained with visuals how to adjust the valves and this video is super informative and i have a good idea on what to look for. I just dont want to find out that i need to replace valves or anything that has to do with the cylinder head disassembly if it still dont get enough air pressure lol
I need to adjust my valves on a go-kart engine somebody told me it was a lifan 277 cc or he thought it was that engine I don't have no markings on the engine at all so I don't know what to adjust my valves to