I've worked on my own cars for 25 yrs an I'm not a certified mechanic at all. But a decent shade tree mechanic. An I watch a lot of how to videos to help me out an keep up with things an ill say this guy here is the best at breaking the issues down so it's clear an easy to fix your own issues. Guess I'm saying this guy is really good at what he does. An I wanna say thank you for posting the videos there really great.
@@-g.k.4389 your PCM monitors the "evaporative emissions" and is seeing a pressure leak. That is all anyone can tell you without actually seeing the vehicle in person and doing some testing.
this guy is a role model, "the best thing we can do is think it through" put a cape on this guy and send him through the streets educating children on the dangers of drugs and dropping out of school.
This is the 1st time I have ever been able to watch a TH-cam instructional video in its entirety without skipping ahead or counting the minutes/seconds until it is over. Very well done video. The explanation of how the evap system works was thorough and easy for a non-mechanic like myself to understand. After viewing Part 1, I was actually looking forward to Part 2! I can't wait to show this video to my mechanic. Bravo, Duane!
I have been a tech for 40 years. Great diagnostic procedure! Clear and simple. I wish more shops would think this way. It would make the business easier for all!
This is a great, methodological presentation with feasible DIY techniques. You might also mention the potential deleterious effects of today's pseudo-gasoline, as it had on my old 2000 Explorer system. I had a large leak and checked all lines, replaced the front purge valve, cleaned and reinstalled the canister vent valve - to no avail. Having wanted to avoid lowering the gas tank, I finally checked the tank vent valve and its lower portion/check ball frame had been decimated by the gasoline. Replacing it fixed the problem.... ...for 6 months, at which point the ECL lit up with a code pointing at the canister vent valve. So I removed it and carefully disassembled it down to the valving components, cleaned them thoroughly and reassembled it. All has been fine for a year. ALSO: it would help viewers to find a link to Part 2 in the Description. Thanks for posting the videos.
All too often we tend to guess and replace parts without knowing the root cause. I have actually had many mechanics operate like this. It's not their money, so why not? This is a valuable lesson in not only determining root cause (he actually checked and determined that the part was bad without guessing) but also to know how to verify the fix. This is what separates a mechanic from a guesser. Nice job!
So appreciate the great instruction! I have a 12+ yo Explorer, I just turned 60 and have been laid-off and on disability for over a year so with time on my hands and little "disposable" income I really need to fix stuff myself as much as possible. You are a true blessing because I haven't worked on my car other than brakes, bearings, and oil changes since I was in my early 20's and they were much simpler back then (1960-70 models). Thank you Duane!
One of the best How To videos I've ever seen, regardless of topic! Step by step, professional, good speaker well prepared. Now I feel OK tackling my problem!
The fact that he put that in his mouth and manipulated the actuators through it, I am impressed, and that’s old school. Very awesome. Subscribed today.
You come with your very own built-in Mighty-Vac! Use it and spare the expense of buying one! That's the way we tested the various diaphragms, dashpots, choke pull-offs etc. in the older systems and should work well for testing most anything that relies on vacuum.
I'm an aircraft mechanic who like to do my own work when I have car problems. You video is the best I've seen with a detail breakdown of the problem. Thanks for posting. Excellent job.
Your videos are some of the best I've seen on TH-cam. Your instructions are very detailed, methodical, and easy to comprehend. Looking forward to learning more from your other videos. Thank you.
Do they give Academy Awards for auto repair videos? This is the most thoughtful, thorough, helpful, educational, well produced video I have ever seen. I have a Hyundai but I will try the vacuum test on my purge valve tomorrow.
I just had a P0456 indicator code. This is a great learning production. Some "trouble shooting common sense", a lot of wisdom, experience, patience, and methodology. Well done. Thank you.
Love it! Troubleshooting 101. No need whatsoever to "throw" parts at the car. If you understand HOW the systems works you can understand how to approach the problems, you can then correctly come to the solution. Thank you for the great lesson! Thanks Duane!
ABSOLUTELY THE BEST informative video for these types of things I have ever run across! I’m “old school” with rebuilding old carbureted, simpler racing engines. This new stuff with all the sensors is a learning experience for me. I love the “CRITICAL THINKING” emphasis on this approach! I am a retired engineer from the aerospace industry and love to see others doing the mind-work instead of replace it and the next thing and the next until it works. Charge the customer for all of the Parts he replaced and go wash his hands. Love this guy! I SUBSCRIBED!!!
This saved me so much time. That diagram alone in the first video layer everything out into perspective. Thank you for the effort you put into your work.
This video was not only helpful but very educational. I like how you explained and gave a diagram of how the system works. The biggest problem that we have in the world today is poor communication. Your straight forward explanation of the system is an example of proper communication. My mother said that this is how school was taught when she was a girl. I totally subscribed and will be watching more of your videos. Thanks for being a great teacher!
Small leak. Watched videos. Replaced gas cap, purge & vent in 1 week of frustration. Old truck had 3 click gas cap. New truck has one click gas cap. Fixed. Started truck, light out before end of driveway. Like you said, "you're looking for something really simple." Thanks for posting videos.
Wow I've been chasing this vac leak in my system for a while and you made the diagnosis look so simple and very clear. The one thing I haven't looked at was that purge solenoid.
Have always enjoyed your videos. Not only r u a really smart guy, u r nimble as all get out!! The way u removed the dash in a few of your videos proved u r the real deal. Putting the young bucks to shame. Great to have u back. I am sure all 73,757 us agree on that!!
Make that 73,758. My first time seeing one of his vids - Having a small leak problem on my Hyundai - and he may have just saved me a mint! Very well done.
Like a good story teller, and if you pay attention, there is a lesson to be learned. Great job, all other videos do not really explain what's happening but you did patiently. I am going to tackle this now on my RX. I noticed a drop in mileage of about 1/2 mpg when my P0441 started.
I'm 69 yr old woman with an incapacitated husband who can't work anymore on the car so I have to use you tube. You're consistent with the mechanical break down on the car and it helps a lot! Thank you!
Hi Marie, glad I could be of help. I understand your position. I'm 68 and had a stroke 2 years ago, so I can't do all the work anymore either. That's why I like to teach.
One thing not covered: If it's the Canister Vent Valve rather than the Purge Valve. You'll need to locate the vent valve, which is usually on or near the charcoal canister that is attached (or very close to) your vehicle's gas tank. Disconnect the wire connector and hoses, and try the suck/blow test as he did here, or use a vacuum gauge.
Very happy with the way you provide information. I now understand the problem with my car and am capable of critical thinking to troubleshoot. Thanks for what you do!
Had a P0456 code on my 2015 Grand Caravan, and with this gentleman’s help I was able to diagnose that it was not the valve pump, but the ESIM by the gas tank. Saved me a trip to the dealership!! Thank you!!!
I AM SO FREAKING HAPPY!! Thank you Thank you Thank you!! Changed the purge valve $42 at Advanced Auto.. 15min to change, my mechanic charged me $40 for his time.. Passed Georgia Emissions No problem. Also changed the gas cap just in case.. Engine light off!! Yayyyy!!! 2005 Saturn Ion.. Over 150miles.. Thank you for being such a awesome teacher.. You are the best!!
Great video especially for the amateur or experienced. Like how you incorporated the Verus/Modus to show how the various menus can identify type of leak and readiness checks. Great work sire
Saw quite a few videos on this topic . This one is by far the best . just enough science explained clearly. I wish I had this gentleman as my mechanic.
Like I get it. we are indeed talking about cars but I seriously think that you can apply alot of what this man is saying to life in general! I am amazed dude!
After watching this video immediate subscriber. I'm having a EVAP leak issue and I'm going to check my purge valve right now. Clear and complete explanation. I would take my truck to this guy's shop. Thank you sir!
I have read and watched professional techs on how to diagnose engine problems. Watching Real Fixes Real Fast is my favorite. He has made me a better Tech in diagnosing and more productive. Thank You sir for sharing your experience and knowledge with someone like myself. You are the BEST.
Without having a prior understanding of EVAP leaks (OBD scan code P0456), this video saved me $200+. Most repair facilities insist on charging anywhere from $125-$150 to do a diagnostic check which may or may not include a smoke test and you have to wait 1-2 hours for the test to be completed. This video uses a common sense approach to diagnosing and resolving the issue. The replacement part for my 2012 Ford Escape 4 cylinder engine cost less than $20 on Amazon. TADA!!! Additional TH-cam videos also explained how to replace the item in less than 20 minutes.
Outstanding. Love the emphasis of "no need to shotgun the problem with parts or invest in expensive equipment, instead think!" I'm tshooting a P0442 problem and information in this video has been very helpful.
These 2 videos are incredible. I have been trying to find background on a EVAP system and your method is the hands down winner. I have subscribed and will begin to view your catalog. Thank you and stay safe during these trying times.
I appreciate your thorough explanation of the system. As a DIYer I really can use your explanation so that I understand what I am doing and the right way to trouble shoot the system. Thanks.
I took a course at a local repair shop by the shops owner on engine diagnosis and repair, OBD2, etc..and he stressed critical thinking skills in the garage. This is a great example of understanding how something works and using that knowledge to solve the problem. Anyone can replace a part, but diagnosing the problem is often 3/4 of the repair.
Sir I want to thank you for sharing your knowledge. I was able to detect several vacum leaks on my son's blazer. Now his AC works!!! Perfect timing because today we are hitting highs of 109!!! Thanks again. I will be looking at all your vids.
This is such great content! Thank you for posting - this has answered my questions on what and why and how I'm trying to repair my car. I've always gone by the premise of "be smarter than a piece of metal" to repair everything. I like your "critical thinking" approach to diagnosis. I don't subscribe often, but I will here and I'll plan on catching up on your content.
Thank you for an absolutely wonderful insightful tutorial on an ever confusing topic,that eludes the best in the trade. please do continue to post more, 🙂
Very informative and helpful! Ive got an 04 f150 with the dreaded 5.4 3v that has tons of issues. One appears to be possibly vacuum related. Other day I noticed my fuel tank was under full vacuum (cap are hard to remove!) when was working on it so I believe the leak is pretty substantial.
Diagnosing this on a "new" old lexus. Ironically, it's the same way I fixed it on my pathfinder. By blowing through the purge valve.... No clue on why i thought the lexus would be any different, but this video shows, that I sometimes need to just go back to basics in thinking. Critical thinking has helped me solve problems in the past. I was literally about to go and pressure test the whole system, but I just had forgotten about checking the purge valve, which is the easiest to access first. thanks.
@@realfixesrealfast turns out.... after taking off the engine cover, the harness wasn't even plugged in. I love buying used cars. Keep in mind I already had changed all 4 02sensors. Still, it's challenges like this that make it fun.
I like this olds mans videos. He’s very thorough and knowledgeable you can tell he’s been working on vehicles his entire life. Love it. Wish I knew a mechanic around where I live like this I would trust him to work on my jeep LJ. I do all my work myself though because mechanics are pos Jst trying to milk you for things you can figure out yourself by googling. Iv been trying to figure out a vacuum leak for a year now at least and have checked everything except for the rollover valves on the top of my gas tank and if I brought it to a mechanics without telling him what I have tested and replaced he would immediately say it’s the gas cap lol. Reason why I do things myself
Super video. Thanks. After watching this I checked the purge valve I installed 3 weeks ago and could blow right through it. You saved me from going insane over my leak.
this video is done very well by this man. i searched and searched on how to find a evap leak and how to fix it. most of the videos i saw were of people just talking about how to do it and thats it. this guys in this video actually goes into detail!! he also made me understand the picture in the first video that shows you the parts of the evap system, where to find them and know what they do. so yeah people this guys is good ha
Yes he is! I'm a novice. He explained this from the very beginning to the end! I've watched several videos trying g to understand the concept some were helpful but didn't go into detail like him! The video showed you the parts, how to test and explained what to do! I feel like I can take this task on and fix my own car now. But now I need a diagnostic computer to use my critical thinking! Thanks!
A more in depth explanation of the actual steps the ECM performs during the EVAP test, and what signals and pressures it looks for would be extremely helpful.
You are still helping us out 6 years later. I immediately took off the purge valve and blew in it and found a leak. Code hasn't come back after it was replaced.
I became a subscriber during the years that I didn't see any videos from you. I learned a lot from Suzuki Vitara series and the clarity I feel with this EVAP system thanks to this video series has really made things clearler for me. The most important clue I was missing was that the system would be closed and use the vacuum of the engine to test if it really was a closed system.
Wow! A smart guy that can teach! Lots of pictures and explanations of your deductions. I have never run in to a problem with this system before. My '08 Prerunner with the V6 threw codes P0441 and P0445 this week, (96k miles). I tightened the gas cap but the CEL has not gone out in 2 short trips. I will erase them and test drive. I can also relax... I know the system now. That was sort of like watching a Sherlock Holmes movie… Not cute or vulgar. Just good thinking. Thank you.
Excellent video, just found out mine was leaking few hours ago, after fixing other numerous leaks. Like plugging a damn, fix one another starts. Hopefully it's the last one
I am much better educated on this subject now that I watched this video. It’s like going to school to learn about evap systems. My Camry tripped the p0456 code the other day. Now I know a simple way to test parts. Thanks.
Very good explanation. Especially like your diagrams. I am going to go look at some of the others. Thank you. I think you along with ChrisFix, EricTheCarGuy and ScottyKilmer have got me hooked on working on vehicles. Especially my Ranger which throws more codes than Bob Gibson threw baseballs. Thanks again.
Fantastic video. A+ for resourcefulness and using the tools available to you, most especially your brain. The only caveat is having a computer to read the data from the vehicle and the knowledge to know what you're reading. Critical thinking sometimes relies upon a base level of knowledge to find the appropriate solution.
Awesome video,and you make everything so easy to understand and follow! You are my go to guy from now on! Thank you so very much! My prayers have finally been answered! Wow I am so excited! 😊
This is an excellent video, it really helped me to understand how to approach my EVAP Purge valve repair on my wife's 2000 mercury grand marquis. Thank you for the help!
#1on my list to trust, I've been plagued with the same problem with our 2014 GC SUMMIT for months, ant our tank has a ventless cap system. Thanks so much for your help!!🔧🔧🔧🔧🔧
Thank you so much for this video. Financed a 2013 Lincoln MKX. Check engine light P0456 came on. Pepboys did a smoke test and said no leak found yet said my Filler neck tube needs to be replaced. Warranty company and I pay to replace part. Drive almost 300 miles filling up a few times no light. Go to start car in morning light back on. Came across your Video and asked Pepboys why they replaced a part that didn't need to be replaced because it passed the smoke test and then asked if Mechanic even checked the purge valve before performing a smoke test. Manager said mechanic is on vacation so he doesn't know. So manager said he would do a free diagnostic. Well I took it somewhere else since I don't want to void my car warranty by doing work on car myself. They checked purge valve for free because of a friend. Low and behold suction felt and light air when you blow. BAD PURGE VALVE. Called Pepboys and complained about poor mechanic work they said they will replace it for free. Thanks to your video I saved myself from replaceing a fuel pump that didn't need to be replaced. A simple fix that literally takes 5 min. to do and they couldn't even do that right.
Great instruction and explanation of the evap purge system. My Innova 3100j is telling me my 2008 Jeep Patriot N. 5spd manual trans. has a small evap error. The status light shows yellow, and my check engine constantly shows check gas cap even after clearing check engine codes. (I just put in a new gas cap.) My brother said he thought he detected light fuel fume. Thanks for your thorough survey.
Fantastic educational video and Duane is an outstanding teacher. This man needs to be Wash, DC!! My gawd, the 200+ down votes here have to be NON-thinkers!! GiddyUp!!!
I had replaced the purge valve on my 2007 Buick Lucerne about 3 months ago because it was stuck open I normally don't use anything but OEM parts, but GM was on strike at the time and I couldn't get the part, so I installed a Duralast from AutoZone and everything was good until recently when the tighten gas cap and engine light came on. I basically changed out everything in the system and still had a problem. It wasn't only after I saw your video that I pulled the purge valve out and tried sucking air through it and lo and behold there was small leak. Fortunately, the one that I had ordered from GM came in, so I installed it and everything works great. Many thanks! I don't know how long I would have chased this problem. The dealership sure couldn't find the problem : )
It's sad a dealership with a certified mechanic couldn't find a rather simple problem .... leaky valve. Its like fixing cars 101. I would find a new dealership. The good thing about this video is that he explains how the system works, stuff likely to fail and how to test the parts. As a mechanic, when something electrical doesn't work, you look first at the switches. When something leaks checking valves first makes sense. Not to say other things can't or don't fail but you have to start somewhere and you go to highest likelihood of issue first.
I have watched both video. Thanks for creating these videos. I have small leak in my 2002 Honda Odyssey (p1456). I have ordered purge valve and test with Vacuum gauge first.
Duane, As usual, a first class video. Your logic and common sense are unmatched. I have seen all of your videos and have to say that you are the class of the TH-cam auto techs. ScannerDanner, SMA, motoYam82 and Schrodingers Cat are sneaking up on you, but you still have them by a whisker. Thanks again for your exceptionally educational channel.
I really enjoyed watching your two part video. They are informative and helpful. I always strive to find the underlying stuff in life; whether it involves my vehicles or not. Thanks for the excellent productions!
Very good explanation. I always want to know what's going on and how things works and not just blindly follow some steps, this is exactly what I like. Thanks
Really good explanation. Both videos were really good. Mine turned out to be numerous hoses were leaking. The car is a 1995 and the hoses were brittle, cracked, loose etc. Replaced 3 hoses at the Canister, two on the way to the Solenoid Purge Valve, and the actual EVAP Control Valve just before the Canister's Tank connection were bad.
Thank you sir! I felt finger to canister purge valve while car was on and didn't feel anything. Great suggestion to test old part. I'll get a vacuum gauge and test. In meantime, hope installing a new one will work. Frustrating when you have to go to emission test and can't get codes to disappear. I have 2012 edge with capless gas inlet and have already done all the maintenance to get that to seal tight.
Thank you for the thorough, awesome, definitive video! I don't know yet if the front valve is the bad one, but it may be, and if it isn't, I know what is going on, and where else to look! Great teaching! Thanks again!
Nicely done and explained. I have the same trouble on my 2003 Jaguar Vanden Plas, and follow this for the more simple way of testing. Sure glad I came across this since it has been since 1974 before joining the service that I have worked on cars. will definitely be a subscriber
I've worked on my own cars for 25 yrs an I'm not a certified mechanic at all. But a decent shade tree mechanic. An I watch a lot of how to videos to help me out an keep up with things an ill say this guy here is the best at breaking the issues down so it's clear an easy to fix your own issues. Guess I'm saying this guy is really good at what he does. An I wanna say thank you for posting the videos there really great.
You work on shade trees? Yeah, this guy seems good!!!
Thanks for your comments, I appreciate them. Duane
@@realfixesrealfast I'm getting a po442 and po455 no check engine light Dodge Grand Caravan
@@-g.k.4389 your PCM monitors the "evaporative emissions" and is seeing a pressure leak. That is all anyone can tell you without actually seeing the vehicle in person and doing some testing.
And* x6
this guy is a role model, "the best thing we can do is think it through" put a cape on this guy and send him through the streets educating children on the dangers of drugs and dropping out of school.
+Albatross Thank you for your kind words. I truly appreciate them
+Albatross I agree.. I'm 46 and I believe you're never too old to learn. I'd love to apprentice at their shop!!
+1Albatross
Albatross v
Hear, hear!
This is the 1st time I have ever been able to watch a TH-cam instructional video in its entirety without skipping ahead or counting the minutes/seconds until it is over. Very well done video. The explanation of how the evap system works was thorough and easy for a non-mechanic like myself to understand. After viewing Part 1, I was actually looking forward to Part 2! I can't wait to show this video to my mechanic. Bravo, Duane!
I have been a tech for 40 years. Great diagnostic procedure! Clear and simple. I wish more shops would think this way. It would make the business easier for all!
Perhaps the best, most professional, thorough, and focused auto diagnostic tutorial I have ever seen. Huge compliments!
Thanks John, Appreciate you taking the time to comment
Great and clear, not judgmental nor emotional presentation. This guy is trustworthy and earns it with his explanation and demonstration.
This is a great, methodological presentation with feasible DIY techniques. You might also mention the potential deleterious effects of today's pseudo-gasoline, as it had on my old 2000 Explorer system.
I had a large leak and checked all lines, replaced the front purge valve, cleaned and reinstalled the canister vent valve - to no avail. Having wanted to avoid lowering the gas tank, I finally checked the tank vent valve and its lower portion/check ball frame had been decimated by the gasoline. Replacing it fixed the problem....
...for 6 months, at which point the ECL lit up with a code pointing at the canister vent valve. So I removed it and carefully disassembled it down to the valving components, cleaned them thoroughly and reassembled it. All has been fine for a year. ALSO: it would help viewers to find a link to Part 2 in the Description.
Thanks for posting the videos.
Very few people can explain stuff without going off topic, myself included. Excellent videos.
Thanks for your comments
All too often we tend to guess and replace parts without knowing the root cause. I have actually had many mechanics operate like this. It's not their money, so why not? This is a valuable lesson in not only determining root cause (he actually checked and determined that the part was bad without guessing) but also to know how to verify the fix. This is what separates a mechanic from a guesser. Nice job!
Thanks Greg, I appreciate your recognizing that important difference. Duane
So appreciate the great instruction! I have a 12+ yo Explorer, I just turned 60 and have been laid-off and on disability for over a year so with time on my hands and little "disposable" income I really need to fix stuff myself as much as possible. You are a true blessing because I haven't worked on my car other than brakes, bearings, and oil changes since I was in my early 20's and they were much simpler back then (1960-70 models). Thank you Duane!
Good for you, nothing worse than doing nothing when your out of a job and low on cash.
@@robertmccully2792 why do I think you're comment is sarcastic.
I'm 50 years old,and I watched your video like a kid in the school.
Great video thank you for the educational video
One of the best How To videos I've ever seen, regardless of topic! Step by step, professional, good speaker well prepared. Now I feel OK tackling my problem!
The fact that he put that in his mouth and manipulated the actuators through it, I am impressed, and that’s old school. Very awesome. Subscribed today.
I appreciate those technics a lot! It saves the consumer money! It sure beats having a mechanic replacing parts left and right and adding to the bill!
You come with your very own built-in Mighty-Vac! Use it and spare the expense of buying one!
That's the way we tested the various diaphragms, dashpots, choke pull-offs etc. in the older systems and should work well for testing most anything that relies on vacuum.
I'm an aircraft mechanic who like to do my own work when I have car problems. You video is the best I've seen with a detail breakdown of the problem. Thanks for posting. Excellent job.
You're a great teacher. Very informative. Straight to the point. No bullshit. Thank you sir!
Your videos are some of the best I've seen on TH-cam. Your instructions are very detailed, methodical, and easy to comprehend. Looking forward to learning more from your other videos. Thank you.
Do they give Academy Awards for auto repair videos? This is the most thoughtful, thorough, helpful, educational, well produced video I have ever seen. I have a Hyundai but I will try the vacuum test on my purge valve tomorrow.
Thanks Matthew, that sure is a nice compliment, I appreciate it
I just had a P0456 indicator code. This is a great learning production. Some "trouble shooting common sense", a lot of wisdom, experience, patience, and methodology. Well done. Thank you.
Love it! Troubleshooting 101. No need whatsoever to "throw" parts at the car. If you understand HOW the systems works you can understand how to approach the problems, you can then correctly come to the solution.
Thank you for the great lesson! Thanks Duane!
ABSOLUTELY THE BEST informative video for these types of things I have ever run across! I’m “old school” with rebuilding old carbureted, simpler racing engines. This new stuff with all the sensors is a learning experience for me. I love the “CRITICAL THINKING” emphasis on this approach! I am a retired engineer from the aerospace industry and love to see others doing the mind-work instead of replace it and the next thing and the next until it works. Charge the customer for all of the Parts he replaced and go wash his hands. Love this guy! I SUBSCRIBED!!!
Thanks, I appreciate your comments
Great job at explaining logically and systematically. Thank you.
Amazing video. It’s so good to see a real mechanics mind at work and not just a parts changer.
This saved me so much time. That diagram alone in the first video layer everything out into perspective. Thank you for the effort you put into your work.
Ummmm!!!!
This video was not only helpful but very educational. I like how you explained and gave a diagram of how the system works. The biggest problem that we have in the world today is poor communication. Your straight forward explanation of the system is an example of proper communication. My mother said that this is how school was taught when she was a girl. I totally subscribed and will be watching more of your videos. Thanks for being a great teacher!
Thanks, I appreciate you taking the time to comment
Small leak. Watched videos. Replaced gas cap, purge & vent in 1 week of frustration.
Old truck had 3 click gas cap. New truck has one click gas cap. Fixed.
Started truck, light out before end of driveway.
Like you said, "you're looking for something really simple." Thanks for posting videos.
glad it helped, thanks for commenting
Wow I've been chasing this vac leak in my system for a while and you made the diagnosis look so simple and very clear. The one thing I haven't looked at was that purge solenoid.
Have always enjoyed your videos. Not only r u a really smart guy, u r nimble as all get out!! The way u removed the dash in a few of your videos proved u r the real deal. Putting the young bucks to shame. Great to have u back. I am sure all 73,757 us agree on that!!
Duane be nimble, Duane be quick, he sure knows how to solve a problem in a lick.
Get off his nuts , im sure he has a wife already.
Make that 73,758. My first time seeing one of his vids - Having a small leak problem on my Hyundai - and he may have just saved me a mint! Very well done.
Like a good story teller, and if you pay attention, there is a lesson to be learned. Great job, all other videos do not really explain what's happening but you did patiently. I am going to tackle this now on my RX. I noticed a drop in mileage of about 1/2 mpg when my P0441 started.
One of the best instructor to date.
Excellent Video!!! Very Well Explained !! He should be given a medal!! Such an amazing teacher!!
I'm 69 yr old woman with an incapacitated husband who can't work anymore on the car so I have to use you tube. You're consistent with the mechanical break down on the car and it helps a lot! Thank you!
Hi Marie, glad I could be of help. I understand your position. I'm 68 and had a stroke 2 years ago, so I can't do all the work anymore either. That's why I like to teach.
One thing not covered: If it's the Canister Vent Valve rather than the Purge Valve. You'll need to locate the vent valve, which is usually on or near the charcoal canister that is attached (or very close to) your vehicle's gas tank. Disconnect the wire connector and hoses, and try the suck/blow test as he did here, or use a vacuum gauge.
Very happy with the way you provide information. I now understand the problem with my car and am capable of critical thinking to troubleshoot. Thanks for what you do!
Just saw this, Great diagnosis, You sir are a credit to all of us, Not just a parts changer...That's how I work also!!
Had a P0456 code on my 2015 Grand Caravan, and with this gentleman’s help I was able to diagnose that it was not the valve pump, but the ESIM by the gas tank. Saved me a trip to the dealership!! Thank you!!!
I AM SO FREAKING HAPPY!! Thank you Thank you Thank you!! Changed the purge valve $42 at Advanced Auto.. 15min to change, my mechanic charged me $40 for his time.. Passed Georgia Emissions No problem. Also changed the gas cap just in case.. Engine light off!! Yayyyy!!! 2005 Saturn Ion.. Over 150miles.. Thank you for being such a awesome teacher.. You are the best!!
Great video especially for the amateur or experienced. Like how you incorporated the Verus/Modus to show how the various menus can identify type of leak and readiness checks. Great work sire
I like how you didn’t clear the trouble code instead let the car run its own test and clear itself. Great video.
Saw quite a few videos on this topic . This one is by far the best . just enough science explained clearly. I wish I had this gentleman as my mechanic.
Thank you Steven
Like I get it. we are indeed talking about cars but I seriously think that you can apply alot of what this man is saying to life in general! I am amazed dude!
After watching this video immediate subscriber. I'm having a EVAP leak issue and I'm going to check my purge valve right now. Clear and complete explanation. I would take my truck to this guy's shop. Thank you sir!
Thanks, I appreciate you taking the time to comment
I have read and watched professional techs on how to diagnose engine problems. Watching Real Fixes Real Fast is my favorite. He has made me a better Tech in diagnosing and more productive. Thank You sir for sharing your experience and knowledge with someone like myself. You are the BEST.
Thanks for your comments, I really appreciate them. Duane
Without having a prior understanding of EVAP leaks (OBD scan code P0456), this video saved me $200+. Most repair facilities insist on charging anywhere from $125-$150 to do a diagnostic check which may or may not include a smoke test and you have to wait 1-2 hours for the test to be completed. This video uses a common sense approach to diagnosing and resolving the issue. The replacement part for my 2012 Ford Escape 4 cylinder engine cost less than $20 on Amazon. TADA!!! Additional TH-cam videos also explained how to replace the item in less than 20 minutes.
Glad it helped. Thanks for commenting
Outstanding. Love the emphasis of "no need to shotgun the problem with parts or invest in expensive equipment, instead think!" I'm tshooting a P0442 problem and information in this video has been very helpful.
These 2 videos are incredible.
I have been trying to find background on a EVAP system and your method is the hands down winner.
I have subscribed and will begin to view your catalog.
Thank you and stay safe during these trying times.
This is one of the best educational videos I have ever seen, anywhere. You have a real knack for it.
I appreciate your thorough explanation of the system. As a DIYer I really can use your explanation so that I understand what I am doing and the right way to trouble shoot the system. Thanks.
I took a course at a local repair shop by the shops owner on engine diagnosis and repair, OBD2, etc..and he stressed critical thinking skills in the garage. This is a great example of understanding how something works and using that knowledge to solve the problem. Anyone can replace a part, but diagnosing the problem is often 3/4 of the repair.
Thanks for your comments Scott. Yes, Critical Thinking is truly an art.
Sir I want to thank you for sharing your knowledge. I was able to detect several vacum leaks on my son's blazer. Now his AC works!!! Perfect timing because today we are hitting highs of 109!!! Thanks again. I will be looking at all your vids.
Glad it helped, thanks for your comments.
I wished you were my instructor when I was in school. Thanks for the video Sir.
This is such great content! Thank you for posting - this has answered my questions on what and why and how I'm trying to repair my car. I've always gone by the premise of "be smarter than a piece of metal" to repair everything. I like your "critical thinking" approach to diagnosis. I don't subscribe often, but I will here and I'll plan on catching up on your content.
Thank you for an absolutely wonderful insightful tutorial on an ever confusing topic,that eludes the best in the trade. please do continue to post more, 🙂
I've watched a lot of videos, and this is the first that explains how the system works, and how to logically figure out the problem.
Very informative and helpful! Ive got an 04 f150 with the dreaded 5.4 3v that has tons of issues. One appears to be possibly vacuum related. Other day I noticed my fuel tank was under full vacuum (cap are hard to remove!) when was working on it so I believe the leak is pretty substantial.
Diagnosing this on a "new" old lexus. Ironically, it's the same way I fixed it on my pathfinder. By blowing through the purge valve.... No clue on why i thought the lexus would be any different, but this video shows, that I sometimes need to just go back to basics in thinking. Critical thinking has helped me solve problems in the past. I was literally about to go and pressure test the whole system, but I just had forgotten about checking the purge valve, which is the easiest to access first. thanks.
You are welcome, thanks for commenting
@@realfixesrealfast turns out.... after taking off the engine cover, the harness wasn't even plugged in. I love buying used cars. Keep in mind I already had changed all 4 02sensors. Still, it's challenges like this that make it fun.
Top-notch pro. Thank you for sending me (a 36 year Shade-Tree) in the right direction. 2000 Camry 4cyl, PO440 & PO442 small leak.
I like this olds mans videos. He’s very thorough and knowledgeable you can tell he’s been working on vehicles his entire life. Love it. Wish I knew a mechanic around where I live like this I would trust him to work on my jeep LJ. I do all my work myself though because mechanics are pos Jst trying to milk you for things you can figure out yourself by googling. Iv been trying to figure out a vacuum leak for a year now at least and have checked everything except for the rollover valves on the top of my gas tank and if I brought it to a mechanics without telling him what I have tested and replaced he would immediately say it’s the gas cap lol. Reason why I do things myself
Super video. Thanks. After watching this I checked the purge valve I installed 3 weeks ago and could blow right through it. You saved me from going insane over my leak.
this video is done very well by this man. i searched and searched on how to find a evap leak and how to fix it. most of the videos i saw were of people just talking about how to do it and thats it. this guys in this video actually goes into detail!! he also made me understand the picture in the first video that shows you the parts of the evap system, where to find them and know what they do. so yeah people this guys is good ha
Thank you for explaining clearly what a evap control system is because I am not a mechanic .
This man is absolutely freakin awesome at explaining things.
Yes he is! I'm a novice. He explained this from the very beginning to the end! I've watched several videos trying g to understand the concept some were helpful but didn't go into detail like him! The video showed you the parts, how to test and explained what to do! I feel like I can take this task on and fix my own car now. But now I need a diagnostic computer to use my critical thinking! Thanks!
I can't thank you enough for these two videos. I have a 2003 Toyota Corolla with the PO440 and PO446 Codes, thanks to you I have a next step to take.
A more in depth explanation of the actual steps the ECM performs during the EVAP test, and what signals and pressures it looks for would be extremely helpful.
Analysis, critical thinking equals the solution to the problem. Excellent video I learned a lot.. Thank You.
You are still helping us out 6 years later. I immediately took off the purge valve and blew in it and found a leak. Code hasn't come back after it was replaced.
I became a subscriber during the years that I didn't see any videos from you. I learned a lot from Suzuki Vitara series and the clarity I feel with this EVAP system thanks to this video series has really made things clearler for me.
The most important clue I was missing was that the system would be closed and use the vacuum of the engine to test if it really was a closed system.
Wow! A smart guy that can teach! Lots of pictures and explanations of your deductions. I have never run in to a problem with this system before. My '08 Prerunner with the V6 threw codes P0441 and P0445 this week, (96k miles). I tightened the gas cap but the CEL has not gone out in 2 short trips. I will erase them and test drive. I can also relax... I know the system now. That was sort of like watching a Sherlock Holmes movie… Not cute or vulgar. Just good thinking. Thank you.
Excellent video, just found out mine was leaking few hours ago, after fixing other numerous leaks. Like plugging a damn, fix one another starts. Hopefully it's the last one
This was an extremely helpful 2 part video series. Informative. I appreciate the knowledge breakdown.
I've missed these videos. Glad to see you back with another informative fix.
Yahya
I am much better educated on this subject now that I watched this video. It’s like going to school to learn about evap systems. My Camry tripped the p0456 code the other day. Now I know a simple way to test parts. Thanks.
Thanks, I appreciate you taking the time to comment. Glad it helped.
Very imformative! Thanks allot for the video! I was completely lost trying to fix this problem on my truck till now.
Very good explanation. Especially like your diagrams. I am going to go look at some of the others. Thank you. I think you along with ChrisFix, EricTheCarGuy and ScottyKilmer have got me hooked on working on vehicles. Especially my Ranger which throws more codes than Bob Gibson threw baseballs.
Thanks again.
excellent video. I knew a lot about this system already, but this video really broke it down in easy to understand terms. Thank you.
Fantastic video. A+ for resourcefulness and using the tools available to you, most especially your brain. The only caveat is having a computer to read the data from the vehicle and the knowledge to know what you're reading. Critical thinking sometimes relies upon a base level of knowledge to find the appropriate solution.
Awesome video,and you make everything so easy to understand and follow! You are my go to guy from now on! Thank you so very much! My prayers have finally been answered! Wow I am so excited! 😊
This is an excellent video, it really helped me to understand how to approach my EVAP Purge valve repair on my wife's 2000 mercury grand marquis.
Thank you for the help!
Thank you for commenting, glad it helped
#1on my list to trust, I've been plagued with the same problem with our 2014 GC SUMMIT for months, ant our tank has a ventless cap system. Thanks so much for your help!!🔧🔧🔧🔧🔧
DUANE, it is always to see you back your knowledge and expertise really helps a lot good videos and info as always.
Thank you so much for this video. Financed a 2013 Lincoln MKX. Check engine light P0456 came on. Pepboys did a smoke test and said no leak found yet said my Filler neck tube needs to be replaced. Warranty company and I pay to replace part.
Drive almost 300 miles filling up a few times no light. Go to start car in morning light back on.
Came across your Video and asked Pepboys why they replaced a part that didn't need to be replaced because it passed the smoke test and then asked if Mechanic even checked the purge valve before performing a smoke test. Manager said mechanic is on vacation so he doesn't know. So manager said he would do a free diagnostic. Well I took it somewhere else since I don't want to void my car warranty by doing work on car myself. They checked purge valve for free because of a friend. Low and behold suction felt and light air when you blow. BAD PURGE VALVE. Called Pepboys and complained about poor mechanic work they said they will replace it for free.
Thanks to your video I saved myself from replaceing a fuel pump that didn't need to be replaced. A simple fix that literally takes 5 min. to do and they couldn't even do that right.
Glad it helped Steven, thanks for you comments.
Wow, that just gained me a lot of knowledge on these complicated EVAP leaks!!!! TY so much!!!
Agree with other post. By far the most simplest breakdown. Great video
Great instruction and explanation of the evap purge system. My Innova 3100j is telling me my 2008 Jeep Patriot N. 5spd manual trans. has a small evap error. The status light shows yellow, and my check engine constantly shows check gas cap even after clearing check engine codes. (I just put in a new gas cap.) My brother said he thought he detected light fuel fume. Thanks for your thorough survey.
Excellent tutorial. Impressed by complete breakdown of system. This gentleman should teach auto tech and set his own his salary.
you are indeed the one....wish you live long and im so thankful enough to known this genius way of trouble shooting technique. thank u Sir!
What a great video. This guy deserves every penny and more he is earning! Thanks for the help!
Fantastic educational video and Duane is an outstanding teacher. This man needs to be Wash, DC!! My gawd, the 200+ down votes here have to be NON-thinkers!! GiddyUp!!!
I had replaced the purge valve on my 2007 Buick Lucerne about 3 months ago because it was stuck open I normally don't use anything but OEM parts, but GM was on strike at the time and I couldn't get the part, so I installed a Duralast from AutoZone and everything was good until recently when the tighten gas cap and engine light came on. I basically changed out everything in the system and still had a problem. It wasn't only after I saw your video that I pulled the purge valve out and tried sucking air through it and lo and behold there was small leak. Fortunately, the one that I had ordered from GM came in, so I installed it and everything works great. Many thanks! I don't know how long I would have chased this problem. The dealership sure couldn't find the problem : )
Glad it helped Stephen. Thanks for your comments.
It's sad a dealership with a certified mechanic couldn't find a rather simple problem .... leaky valve. Its like fixing cars 101. I would find a new dealership.
The good thing about this video is that he explains how the system works, stuff likely to fail and how to test the parts.
As a mechanic, when something electrical doesn't work, you look first at the switches. When something leaks checking valves first makes sense. Not to say other things can't or don't fail but you have to start somewhere and you go to highest likelihood of issue first.
Wow, great video. I wish your shop was in my town, you would have my entire family and friends business. Thank you!!
I have watched both video. Thanks for creating these videos. I have small leak in my 2002 Honda Odyssey (p1456). I have ordered purge valve and test with Vacuum gauge first.
I’m not a pro just semi pro. This guys videos help me keep up with my skills.
I need someone like you as a mechanic. I am so tired of incompetent mechanics.
Thanks, here is a tip, go to a local auto parts store, ask foe the commercial sales rep, he will know who to recommend, don't ask the counter people.
Duane,
As usual, a first class video. Your logic and common sense are unmatched. I have seen all of your videos and have to say that you are the class of the TH-cam auto techs. ScannerDanner, SMA, motoYam82 and Schrodingers Cat are sneaking up on you, but you still have them by a whisker. Thanks again for your exceptionally educational channel.
I really enjoyed watching your two part video. They are informative and helpful. I always strive to find the underlying stuff in life; whether it involves my vehicles or not. Thanks for the excellent productions!
Very good explanation. I always want to know what's going on and how things works and not just blindly follow some steps, this is exactly what I like. Thanks
your vids are always very good, thanks for your efforts...
Really good explanation. Both videos were really good. Mine turned out to be numerous hoses were leaking. The car is a 1995 and the hoses were brittle, cracked, loose etc. Replaced 3 hoses at the Canister, two on the way to the Solenoid Purge Valve, and the actual EVAP Control Valve just before the Canister's Tank connection were bad.
Thank you sir! I felt finger to canister purge valve while car was on and didn't feel anything. Great suggestion to test old part. I'll get a vacuum gauge and test. In meantime, hope installing a new one will work. Frustrating when you have to go to emission test and can't get codes to disappear. I have 2012 edge with capless gas inlet and have already done all the maintenance to get that to seal tight.
Thank you for the thorough, awesome, definitive video! I don't know yet if the front valve is the bad one, but it may be, and if it isn't, I know what is going on, and where else to look!
Great teaching! Thanks again!
Glad it helps. Thanks for comments
Nicely done and explained. I have the same trouble on my 2003 Jaguar Vanden Plas, and follow this for the more simple way of testing. Sure glad I came across this since it has been since 1974 before joining the service that I have worked on cars. will definitely be a subscriber