How To Test Evap Purge Valve is Good or Bad (No Tools Needed)

Рет қаралды 580,379

Жыл бұрын

A quick way to test if the Evap Purge Valve is working or has failed.
Read here for more information: www.backyardmechanic.org/how-...
www.backyardmechanic.org
By using this information user assumes all risk of use.

Пікірлер: 285

@tylerblack9220 Жыл бұрын

Short, to the point, easy to understand. This is exactly what type of car repair content that we need on KZfaq! Thank you!

@rustyd5070 10 ай бұрын

Exactly! We don't care about a life history.

@kevinmizhquiri5865 8 ай бұрын

Amen 🙏🏽, short videos are always the best, this guy deserve more subscribers 🫡

@lethalchaos19 7 ай бұрын

Thanks man thats the same sound when i first started my mitsubishi lancer 2005 i got an error code P0456 small leak i already replaced my gas cap in the orignal dealership gas cap but i still have this error… is the symptoms sometimes im loosing power when i press the gas rapidly like chocking is that one of the symptoms? Also the sound u is same as my lancer. Thanks man for this short video!!

@justinsoderberg5660 6 ай бұрын

Yes short and to the point

@GOGO14234 5 ай бұрын

That right comment in the entire section , thank you sir

@JohnDoe-uv3rr 7 ай бұрын

It’s always cars guy who make videos that get right to the point.

@brianknodel535 28 күн бұрын

And the other one I tried to watch went off on tangent about clips on wheel well firewall(whatever)😅

@neoleonor7140 9 күн бұрын

@@brianknodel535HVAC mechanic is owned by my nephews dad bro!

@Jay.Walker 2 ай бұрын

Only guy that said car needs to warmes up to valve test. Everyone else has folks checking plugs, fuses, etc. Thank you for posting.

@sonjacuti2627 Ай бұрын

Well you should check fuses etc.. before buying expensive parts

@chinhphan4787 6 күн бұрын

@@sonjacuti2627 it's controlled by the PCM there is no fuse. If it's not working and that purge valve is good you got bigger issues.

@ericandrews1661 8 ай бұрын

Yes this is exactly what my father and I found yesterday. I wish we had found this video before then but is helpful to see even now.

@fastrivers812 10 ай бұрын

When I was younger my grandpa had me pull his finger to test his purge valve. It was always in working order, his rear end made a noise every time.

@T4k013 4 ай бұрын

😄

@arcademania7544 4 ай бұрын

🦙💨

@bigdoog9870 3 ай бұрын

bro that was so funny you had me going there lol.

@michaelmartinez9602 2 ай бұрын

Omg 😂😂

@genericusername1365 21 күн бұрын

Your grandpa was a good man and had you pull his finger because he wasn't the kind of guy to toot his own horn. That means he was humble, which is a good quality.

@gutzkinq Ай бұрын

this was absolutely the best automotive "diag" vid ive ever seen,, , brief and to the point- easy to understand. thank you a ton! gonna go test this out on my galant

@jakethesnakev1121 Жыл бұрын

this video is super helpful, thanks for explaining how each part worked and how the whole system is kinda put together. it really helped me get an understanding of what’s going wrong with my car

@Nichole-xs3ot 10 ай бұрын

Awesome video! Thank you! Concise, to the point, and great camera placement! This will really help me either confirm or mark off why I’m getting an evap code.

@YamahaC7SRG Жыл бұрын

Thanks, that was great! If you don't want to wait for the car to warm up, you can remove the electrical connector on the valve and clip a wire to each of your battery terminals. Carefully touch the other ends to the electrical contacts on the valve. If the valve is good, you'll hear a clicking sound as the solenoid moves.

@danielmalloy6093 11 ай бұрын

Yu can use a 9v battery also.

@contouraerials 10 ай бұрын

doesnt matter positive and negative on the connector?

@waldolemmer 9 ай бұрын

@@contouraerialsYes, it's a solenoid

@louisthibault555 7 ай бұрын

Dude, can you make a video? I’m too dumb to confidently do this after reading words 😉

@stephenenright8428 7 ай бұрын

On the e240 merk there is another purge valve on the side of the fuel tank to the canisters grate video

@prabhakarrao4922 11 ай бұрын

Simple & to the point. Great video.

@omegahyperes96 9 ай бұрын

Excellent! Thank you for this concise information, Sir

@danwinmanalang25 Жыл бұрын

Thanks for the tip👍👏 How to trace a big leak from the Vapor canister?

@Javii96 4 ай бұрын

Excellent video thank you. No need to waste money on a part thats good without testing first

@endurofan9854 Жыл бұрын

oh and here i was thinking it was on the opposite like it opened on first start to aid for the fuel and then closes when the engine warms up 😅 thank you for clearing that up

@behunin1963 Жыл бұрын

Brilliant & simple! 👍

@dantesmith3664 Жыл бұрын

Another great video. Thank you sir

@chaidezrigo 2 ай бұрын

This is the exact noise my car is making. Thank you very much my friend! 🍻

@B.F633 11 ай бұрын

Very helpful tip. Thank you

@Rody_le_Cid 6 ай бұрын

no nonsense about your life story and to the point, awesome video, subed

@lldadb664 Жыл бұрын

Great video. Thanks!

@anthonybrown3481 10 ай бұрын

Man, I want to give you a hug for that. Thanks.

@buttdreads Жыл бұрын

Top notch video, thank you.

@patrickedgington6189 Жыл бұрын

Thanks this video just showed me how to test this and save me money, really thank you

@Michaelobama184 Жыл бұрын

Just buy it. Mine cost 15 bucks and I also replaced the gas cap. Tacoma truck 253,000 somethings gotta break.

@bubbiethecat5435 2 ай бұрын

Thank you so much my car keeps saying I have a Evap leak and we have tried 2 different gas caps so it’s not my gas cap so just trying to figure it out on our own so we don’t spend a ton of money getting it fixed in a garage

@Johnsmith-yv8tx 8 ай бұрын

thank you for your information so useful!!

@georgegarner1775 Жыл бұрын

great job. it is so easy when know what you are doing. thanks!!!!!!!!!!!!!!

@cayilo2 9 ай бұрын

Thanks bro, nice explaining.

@mrfuel1866 7 ай бұрын

Thank you buddy...excellent video

@toddcornelius5817 Жыл бұрын

Very good information thanks 👍

@johnnyowens6757 3 ай бұрын

A effective to the point video , thanks

@dannysautorepair Жыл бұрын

Great video

@movingtorichmondva 2 күн бұрын

you are awesome! Not only how to replace it but how to troubleshoot it to see if you even need to replace it! Thank you thank you thank you!

@khalidkfy7368 22 сағат бұрын

Thanks, it was very helpful

@carlodonnell146 6 ай бұрын

when the engine goes into close loop is when it starts operating and the fuel trims will go a bit rich because of the extra fuel vapors thats pulled in.

@jdubs1007 6 ай бұрын

Excellent Video!!

@vitalgambit6641 8 ай бұрын

Awesome video easy to follow

@Frank289100 9 ай бұрын

I HAVE A 05 MERCURY MARINER. USING YOUR VIDEO HERE AND EVEN THOUGH IT'S FROM ANOTHER TYPE OF VEHICLE, I LOCATED MY PURGE VALVE AND I WILL PERFORM THIS EXACT TEST. IF IT'S BAD I WILL REPLACE IT. MOST OF ALL YOUR VIDEO HERE WILL SAVE ME THE TROUBLE OF GOING UNDERNEATH THE CAR NEAR THE GAS TANK AND CHANGING THE VENT SOLENOID VALVE WHICH MAY STILL BE GOOD. IF THE PURGE VALVE TURNS OUT TO BE BAD. THEN I KNOW IT'S NOT THE VENT VALVE UNDERNEATH THE GAS TANK. THANK YOU VERY MUCH FOR POSTING THESE TYPES OF VIDEOS. IT HELPS ELIMINATE A HEADACHE AND IT HELPS PEOPLE KEEP UP ON THE MAINTENANCE OF THEIR CARS. WHO HAS TIME TO TAKE IT TO A MECHANIC AND YOU GOT TO LEAVE THE CAR THERE ALL DAY WHEN YOU NEED TO USE YOUR CAR DAILY. AND IT'S A TOSS OF THE DICE IF THE MECHANIC IS HONEST OR NOT..

@gt_drew2258 9 ай бұрын

ALRIGHT BROTHER LET ME KNOW WHAT HAPPENED

@Frank289100 9 ай бұрын

@@gt_drew2258 I REMOVED THE PURGE VALVE ON THE FIREWALL AND RAN DIRECT POWER TO IT AND IT'S FINE. THEN I DID A ELECTRICAL TEST AND FOUND THERE IS NO CONSTANT 12+ POWER THERE. I HAVE TO ALSO CHECK IF THE COMPUTOR IS SENDING THE 12- SIGNAL. I WILL LET YOU KNOW HOW I MAKE OUT AFTER I LOOK INTO IT FURTHER.

@Stizzedd 3 ай бұрын

HOW DID IT GO???

@Strumdude 2 ай бұрын

😂😂

@oldkidx 10 күн бұрын

CALM TF DOWN 😭😭‼️

@user-kz1mz4hq3i Жыл бұрын

Great Video Suggest a zoom out to show where in the engine compartment to find the purge valve

@steve9326 10 ай бұрын

these valves are in different locations based on the make\model ect..

@WerkToday Жыл бұрын

Thanks, What engine was this test done on?

@_TheHSG 4 ай бұрын

brilliant video

@richarddiaz8248 Жыл бұрын

Thanks so much

@bebettertryharder5338 4 ай бұрын

Thanks bro... this helped

@Jralls3 6 ай бұрын

Great video 👍🏿

@carribean660 11 ай бұрын

Thank you for the explanation.Mine is stuck open 🙄

@inhocsigno9151 3 ай бұрын

Good check, but note that GM does a evaporate test on cold start and passes vacuum to the evaporation system. If the system does not hold vac or is not vented quickly on Vent, or build vac, codes can be set.

@QasimMaqbool 7 ай бұрын

Thanks dear, bless you.

@mrayco 2 ай бұрын

❤❤❤ awesome quick and easy

@shanebyrd8625 8 ай бұрын

Should it have constant power with key on to the purge valve plug?

@aaaDKaaa Жыл бұрын

Question: that blue part at the top should be connected to the purge valve?

@patrickrobinson317 Жыл бұрын

Thanks for making this Bro !!! 😀😀😀

@davechampion3495 Жыл бұрын

Great explanation! Mine is sucking like crazy even with the electric disconnected. Stuck open so I will replace. Hopefully that will fix my p0449 on a Chevy Tahoe.

@joshuafleming4433 Жыл бұрын

Did it clear the code? I'm about to check this to see if that's the problem. My evap vent value behind the gas tank looks good but I can't check it due to the damn clip on the hose line (won't come off)

@davechampion3495 Жыл бұрын

I had to replace the rear vent valve too. It was easy to get to but that clip is tricky. It takes a couple small screwdrivers to pry it out.

@joshuafleming4433 Жыл бұрын

Damn, I don't even think I have screwdrivers that small. I'll go pick some up later on. Also on the purge value under the engine cover, how did you test it? Mine has a vacuum line attached to it that won't come off and a stem that has a screwed on green cap. Which one would I use to see if it is staying open or not? Idk what year Tahoe you have but mines a 06 with the 5.3. the previous owner neglected the hell out of this truck, rear main seal was bad and my lifters have that tick

@joaquinsandoval7156 10 ай бұрын

I don’t get it why on my car I don’t get the purge valve after the car warmed up and two different purge valves not to open. I have no codes what so ever is very frustrating.

@tonycobb9059 5 ай бұрын

@joshuafleming4433 6 months later here lol. The clip pushes very easy. A pair of needle nose pliers worked great for me. Trick is to push both tabs up Abita and pinch the top part with other hand then drop the pliers and the hose eascomes off

@jamoss2007 3 ай бұрын

Purfect video!

@hjhshoms2545 Жыл бұрын

I have watched videos on replacing the purge valve on Hyundai's but none show the exact location of the purge valve and how to get to it.

@mrcountit 5 ай бұрын

Sweet! Thank you!

@RichardWilliams-lt9yv 7 ай бұрын

Thank you for the video my name is Richard I drive a XLT 2021 F150 Ford says my purge valve was out they changed it and then it took them a couple weeks then they had to put one on my gas tank because I had a light on my Dash just got it back today after 3 weeks light come back on nice trying to say it's from the LED lights I put on my truck that had no problems for 2 months any suggestions

@mohammednoah6813 7 ай бұрын

Thanx , good job

@gibson7654 Жыл бұрын

What if it works intermittently? When I started the car (2008 mercury mariner hybrid) it would not suck even after warming up. The car was higher than normal on idle and the p0455 code came in. I have checked voltage on the connector and I was getting 14v. When it went down to 13v I plugged it back to the valve and it started sucking. The engine light went away. Is the valve the issue or should I look elsewhere?

@RandomClips27. 10 ай бұрын

Thank you my code said it was the egr valve so got a new one same problem starts and stalls again till I remove the egr valve connector and it runs fine but once I done what you done it turned out my purge valve was stuck open from a cold engine replaced it and perfect and passed emissions aswel as it failed last time

@devgirl7208 Ай бұрын

thanks for posting this ... can small evap leaks cause car engines to heat (not necessarily overheat) due to these exhausts not pumping fast enough? can it cause a car to "shake and rumble" upon acceleration? my guess is an exhaust pipe might cause those types of issues.

@wildside1951 Жыл бұрын

Would checking resistance on it work too? Mines got no resistance on it

@scottphillips2023 6 ай бұрын

Would this be the same part to cause overpressure in the fuel system or something else? I have a small evaporator code and getting horrible fumes from the tank area and also noticed my tank is wet and fuel dripping.

@jeffdeluca1153 8 ай бұрын

Question... I ran my engine a good 20 minutes and the valve never pulled suction although in the hose from the manifold - there was suction. So I placed my finger over the open tube on the valve for a few seconds and in doing so it began to function as you show. Is it possible the valve is intermittent or sticking thus throwing the codes?

@spazzologist 2 ай бұрын

Change it anyway. It’s cheap insurance

@mikimiki195 7 ай бұрын

Good video thanks

@mohamadkilani2599 Жыл бұрын

Hello friend when the engine going warm, does the Files when you touch it in your finger you feeling like little vibration (the valve )is that normally or not thank you

@uptownphotography 11 ай бұрын

Good tip. Unfortunately, on my 2008 E90 (BMW) it is located underneath next to the gas tank. It's doable, but somewhat a pain unless you have a lift or ramps. This is great info for other cars however...Well done. Phil

@BamaJoeBob 10 ай бұрын

It sounds like you’re referring to the vent valve instead of the purge valve? Just guessing

@uptownphotography 10 ай бұрын

@@BamaJoeBob Is the vent valve the one near the gas tank on an E90 (2008 335XI)...Thanks.

@pennyluo9123 7 ай бұрын

@@uptownphotography that's not the same valve. This purge valve should be near the intake manifold.

@uptownphotography 7 ай бұрын

@@pennyluo9123 Thanks for this info. To be clear are you saying the Purge Valve is not the same as an EVAP Pump? My EVAP Pump is next to the gas tank (and a pain to get to), so if the Purge is a different value (and is near the intake manifold), this would be great news as that I likely can get to easily to test. Thanks for your comment. Phil

@finessedabest9341 7 ай бұрын

That's the charcoal canister vent valve

@miguelrivera5345 8 ай бұрын

Thank you Sir

@user-eu2tj2ti8c Жыл бұрын

What if it’s the hose how do you remove the long hose in the front if you see it cracked

@TimRoss-qv9td 9 ай бұрын

Also, you can just put 12v power to it using some jumper wires and you can hear it click to open and you will be able to blow through it. Without power, valve should be closed and won't be able to blow through it.

@speed8701 6 ай бұрын

The other purge valve that always give you a Small Leak Code is the one up under the rear end ant it cost a mint.

@susanemerson269 3 ай бұрын

2002 vapor canister Chevy blazer? Should we test evap purge valve first?

@charlievanwindt7145 Жыл бұрын

Thanks!

@josemena7644 4 ай бұрын

Thank You 🙏🏼

@bridgeboy9256 Жыл бұрын

Does the motor have to be cold? I haven’t drove in a hour or so but motor still has heat is it going to work the same?

@ImpureGunner 2 ай бұрын

Can you make or do you have a video on how to test using a smoke machine. Im thinking about getting one to test

@htimsxela Ай бұрын

Thanks. Quick question (I hope). So I did the test and I can feel the vacuum when the engine has warmed up. But when I reattach the hose, the thumping (open/close?) noise is still present. Does this mean that the line further up is clogged?

@stevesmith5604 11 ай бұрын

Thank you for making this test available. I own a 2007 Honda Odyssey with a P145c trouble code. I did the test and the valve test good. Any suggestions as to what I should check next. Thanks again.

@deejwilson_5276 10 ай бұрын

Gas cap

@deasttn 20 күн бұрын

Gas cap, canister, or a leak in your hoses

@keovongogh4094 5 ай бұрын

What are some of the symptoms of a bad purge valve?

@user-wq7cn6tt2u Жыл бұрын

You are amazing! Thank you!

@pourtierbeatz7804 9 ай бұрын

Would this cause my car to feel like i lost a cylinder or two if its bad solenoid? I got a code for the purge flow but not sure if thats whats causing my car to feel very slugish

@mikhail8853 6 ай бұрын

How do you know which hose is going to the engine and which is going to the canister?

@zero932905 Жыл бұрын

I've got a ford 5.4 thats showing evap codes so I tried this method and after letting the engine warm up for about 30 minutes the valve did not appear to open at all. The truck has been having issues losing power and throttle response to the point of stalling out while I'm driving. Could a bad valve cause these problems? The truck will sit and idle with no problems.

@HVAC_Mechanic Жыл бұрын

In some cases, a bad purge valve can cause an engine to run badly, but usually, that is when it is stuck open and causes a vacuum leak. If there is no vacuum at the purge valve, then it is likely not stuck open. I would test the purge valve with a meter and check for an EVAP leak.

@Royalti20 8 ай бұрын

so i have the entire valve off, and blowing through it. should i be able to get air going in in either direction? just 1 direction? the new valve i bought (wrong size btw) doesnt allow air through either side. is this what should be happening with the stock valve?

@jeannine4251 10 ай бұрын

Thank you for making it clear. Another video-er "showed" where the purge valve was by getting his arm in the way, and poof, the valve appeared in his hand. Not helpful.

@ocam988able 3 ай бұрын

Does this valve start faulting and finally quits? Does it start sticking until it goes bad? I tested mine as per your video and it does have suction. Twice though, after gassing up it won’t start like if it is flooded and eventually it will start. Thanks

@MrJithingopal143 6 ай бұрын

My accord v6 purge valve also making that too til noise and it’s irritating too. Is there any solution to reduce the noise. Hondas technician said it totally normal

@BigEightiesNewWave 11 ай бұрын

Problem is it is NOT showing the 3rd vacuum line going to the Purge on Fords, all the way to 2008. Not the bigger diameter plastic line carrying the fumes into the manifold, the small diameter plastic line the supplies vacuum from throttle body to the purge valve. Not one so-called expert has answered this, though on one site the author said it was needed for a Ford Purge to operate. I had a big vacuum leak/P0171 mechanic knocked the line off at the TB, I found it/fixed it. I had ZERO EVAP-related codes during the 2 weeks the vacuum line was disconnected, so what exactly is this vacuum line for? During the time it was off, I had all the usual things a vacuum leak would exhibit. Fuel trims way too high, high idle, then low rough idle, stalling, and low downstream O2 sensor readings. Also the P0171 would come back after I cleared it.

@smileymerino8972 8 ай бұрын

If it’s pulling when you start the engine, even after installing a new valve, what could it be? Or what am I doing wrong.

@cjwittmeyer 11 ай бұрын

what car is that where the evap valve is right on top for you? I cannot find it on my 2009 subaru outback

@2Jeezuzisreal 9 ай бұрын

I have the 5.3 Yukon 1500. Engine light on and it's pulling a code po449. The the engine hesitates at take off I don't know what the big deal is. I sure don't want to go underneath and get into that big hassle of changing the EVAP. Above the axel. And blowing out the lines is a hassle because you have to unhook him at the fuel pump. Then I saw another KZfaq video that shows a whole new style of evap canister. And you have to have new heater hose in order to make it work.

@rwarren4637 11 ай бұрын

My check engine light came on, and the Code Read from AutoZone said: EVAP Canister purge valve, was the culprit. What is the cost to repair this? I have a 2015 Chevy Impala. Can a Backyard mechanic fix this?

@Dave-jc6ky 8 ай бұрын

So if vacuum during first 2-3 minutes then the purge valve is bad. Perhaps likely stuck open. Is that correct?

@krakenhits1587 6 ай бұрын

I got an EVAP code and they suggested this part I changed out the part and the new one is making a that I never heard before. It doesn't seem normal so I don't know if it's supposed to do that. When I took my old one off I checked it for flow and I can't blow through it so they say it's good when it's like that so I don't even know if I'm replacing the part that is throwing the code?

@phantasm489 7 ай бұрын

So mine (Toyota Camry 2014 with the 2AR) actually has a third nub but nothing is hook up to it (part 90910-tc001) is that just an air purge or is it actually supposed to connect to another vacuum line

@thecarfixchannel3046 5 ай бұрын

Some EVAP system purge at idle but this Toyota may not, the purge valve may not be leak full engine vacuum partially stuck open and you cannot feel the vacuum by hand so you need to use a vacuum gauge and you need to unplug the purge.