P0442 Where Leaks Happen & Easy Common Fixes

- Silicone paste → amzn.to/47g1psq
The most common check engine light cause is an EVAP leak. As a professional mechanic of more than 30 years I've seen many. This video covers common places and fixes for a P0442 check engine light.
Video on Evap canister function → • How Does an EVAP Can H...
Another good Evap canister mechanics video → • What's in an EVAP Cani...
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[@briansmobile1]

Need silicone paste? This is the best deal on it → amzn.to/47g1psq

[@billluznar6713]

I agree. There is more "vapor" released when pumping than on this system. Once had this code and it was the rubber cross-over hose going over the axle on our 2002 Jeep liberty. Also did have a bad cap another time. Good info!

[@hammerhead6537]

As usual a very informative video, thank you Brian.

[@rchick9682]

2:22 "rubber can rust" haha

[@Xera01]

Replaced purge & vent valves + gas cap to no avail. Last week I put the gas cap on with 1 click instead of the 3 clicks that I did on my old Silverado for 8 years. The truck sat all day and when I started it in the evening the SES light went out and stayed out all weekend. When I drove it Monday, I went over the RR tracks and the light came back on. I'll try some of that dielectric grease tomorrow. Love your humor.

[@Robboned]

Never a gas cap. I've gone through three of them & no go!

[@hp5469]

I've never had a repair be the " 99% of the time its this cheap easy fix ". Mine are always the trouble shooting nightmare, that you throw 2-10 parts at before getting it figured out.

[@stuartsmith3359]

Dealing with a p0442 code on my chevy right now. Mechanic replaced canister solenoid vent, then the code came back, then He said he had to replace the entire gas tank and fuel pump. And guess what...the code is back again!! So far $2,400 into fixing my “small evap leak” and its not fixed.

[@socal69_88]

@@stuartsmith3359 have you figured out where the leak is coming from? Perhaps the purge valve solenoid?

[@stuartsmith3359]

@@socal69_88 not yet, but that has already been replaced

[@TrapnReem]

@@stuartsmith3359 same bro same😭

[@serfcityherewecome8069]

Lol, yep ..I had the similar P0446...replaced the "99% of the time" vent solenoid THREE times, the cap twice and got led even further astray when I replaced the GOOD purge valve with a brand-new DEFECTIVE one, lmao...replaced the filler neck and then finally struck gold with the damn tank pressure sensor, just before I was about to give an and tear out the tank & canister. Hope this keeps someone out there from blowing his or her brains out over that damn code. 👉🤬👈

[@conradts3338]

Really good and informative for a short vid. Thanks for sharing your wisdom.

[@mostlymoparih5682]

Wow Deja vu. I just replaced the filler neck in a 2000 Corolla and now it has a leaking brake line. The Corolla you showed did not have any covers on those lines running to the back. The one I'm working on has covers and I don't think it's such a great idea. Water, mud, ice, and snow can get lodged up in those covers and cause early rust on those lines. I am doing a quick 2 foot repair on the brake line but I think I am going to look into replacing those two lines all the way back the rear wheels. Great video and BFATE.

[@jamesu]

The gas cap is the one part of the emissions system that gets touched on a regular basis. I love my smoke machine but evap leaks can be a challenge especially when the charcoal canister removes the smoke before the leak.

[@Sheeeeeeeeeeeeiiitt]

Wonderful information, thank you for the walkthrough. I have the capless system on my 09 F150. Wish there was an aftermarket retrofit allowing for the traditional fill and cap.

[@jtbarber6697]

Xvnnn

[@lonwillis783]

You forgot Brian You can Leak also! LOL Good Explanation thank you !

[@jojucha62]

Thanks you for the info

[@HavokStrifeX]

I've been getting this code every couple months for the better part of 3 years. I would just clear the code and move on with life. Not the greatest move for the environment, but the car runs fine. I visually inspected my gas cap and it looked fine, I'll give the wire brush and silicone a shot. I have my doubts, but you've never led me astray. Your WRX shock install video is the only reason there's new shocks on my WRX..

[@Kentucky-bz6pg]

I have a 2019 Jetta with an evap code. The purge valve at the engine test okay. I hooked a smoke machine up at the purge valve line that leads back to the canister. I see smoke pouring out of a round vent at the canister. Does this mean that valve next to the canister is open and bad?

[@SPLEclipse]

Here's a tip: stop overfilling your gas tank. I know it feels better to fill to $30 than $27.38 but you are flooding the evap system. This is especially true if you drive a Hyundai.

[@Hephoestus69]

If I stop filling up ⛽️ would the go code away ?

[@danielson2454]

Thats why I only pump $10 at a time.

[@BirdFromYakiVegas]

😆 oh no I just got the refilling my tank and overfilling again for the third week 🤷🏾‍♂️🤦🏾‍♂️

[@kingchan-cd3ti]

Yeah that might be true but when people put gas in most people use the latch so we don’t hold handle whole time

[@unusedacct8833]

So few people know about this. You know your stuff.

[@AntonioClaudioMichael]

That's a very well taken care of Corolla the undercarriage is super clean

[@simonekirkland4573]

Thanks

[@AntonioClaudioMichael]

@@simonekirkland4573 your very welcome

[@americanpride9733]

Only cause its cali. The cleanest toyota in WI is dirtier than the dirtiest toyota in CA

[@Catman1987]

This goes for the 2001 toyota corolla S right ? I have a P0422 and a P0440 code .

[@realjaxon]

If the EVAC system is as it should be, with no leaks, should the engine immediately start up ? Mine takes a few spins before it kicks over. Plus, I have a gas smell coming from the rear of the vehicle. I have no Check Engine light, and the last time that I checked, there were no trouble codes. I put a new gas cap on it. I have a 2002 DOHC 3.0L Ford Taurus.

[@fly69doc]

Feel like this is a video to discourage people to try to fix the p0442 code themselves.

[@unknownunknown1175]

So it was the gas cap that gave the code? If you got gas, since cide and it went off. Could that be an indication of the problem?

[@andrewmason1111]

Telling people to remove rust with a steel brush where gasoline vapor is present is inherently dangerous!!! Brass brush will clean up rust, and won't spark!!

[@heavenlara5730]

You can tell he's an ignorant idiot.

[@genericusername1365]

Also, tape the inside holes of the fuel filler neck. You don't want the debris from brushing to go down in there. After brushing, use compressed air to blow out the debris, then wipe down with alcohol or even a bit of gas. Wear a particle mask when blowing out the debris. Then remove the tape (or whatever you use to plug up the holes).

[@creatingmygarden]

will an evap canister that has been overfilled eventually evaporate if you no longer overfill?

[@willhikearizona]

I have been trying to find a leak for awhile on my 2006 Acura TL, bought the smoke machine, still couldn't find it. Maybe I need to try that again? Once in awhile I can smell gas when it's hot out. I also have pulled off the canister and put a little pressure to it and it seems to be holding. I guess I'll replace the gas cap again and try the silicone. I just adjusted my valves and replaced spark plugs last night, and it is running better. I just hate taking it places because half the time I feel like the guys that work on it didn't have any better ideas than me. Good video, thanks Brian.

[@briansmobile1]

Take the evap can out of the mix. Cork it & test the tank & rest separate. Test the can separate.

[@willhikearizona]

@@briansmobile1 Thats a good tip, thank you. I will look at it again. Hope things are well with you and your family.

[@ssevier1149]

If you can smell the vapors, you can use that to help track down the leak in combination with the smoke machine. We found a very small leak on the ring around the fuel tank sending unit mostly thanks to the smell of the vapors being forced out (had to pull the rear seat to get to it). Couldn't visually see the smoke but a bit of soapy water confirmed where the leak was.

[@willhikearizona]

@@ssevier1149 Great tip, thank you I will give it a try.

[@cesartoledo5621]

Thank you, you’re funny.

[@renejacques8288]

I have a 95 Maxima. I did an engine rebuild and got the camshaft followers out of order. Is there a way to know where each goes?

[@beau4464]

Failed my emission test due to code po442, went to autozone auto parts they scanned my onboard computer to confirm the code. Turned out to be bad gas tank filler cap to correct and check engine light is now off. Viewed the videos on you tube before going to autozone

[@AntonioClaudioMichael]

Good video

[@briansmobile1]

Thanks Antonio!

[@bbkmm1]

A super common EVAP issue with Toyota cars is the VSV. It will throw P0440, P0441.

[@TheWwbartman354]

Great now I need to take a leak lol🤣🤣🤣🤣

[@wyattoneable]

"Global Wa..... almost makes me throw up". Laugh out loud Brian. Now back to the video.

[@Romulan112]

my filler neck has rust on it. you mentioned using a wire brush on the filler neck. Can that create a spark and blow up doing that?

[@raymihulka8539]

Brass brush

[@AntonioClaudioMichael]

2000 4runners have them next to the brake booster under the hood

[@czrthegreat]

Would the check engine light go off on its own after doing the gas cap routine???

[@9wyn]

Yes after you drive around. But only if there is no leak(s) somewhere else.

[@lorettacaputo6997]

I have a 2008 Nissan xterra. It is going thru a period of throwing p0456 codes and now it throws a p0442 code. What is the difference between them when the ofd scan tool shows the same result....small evap leak? After a gas cap replacement, a evap solenoid which was bad and replacement of some lines with good clamps, the code still remained but went from large leak to very small leak. Interesting, this is the second winter that I have noticed that the codes will go away as long as the ambient air temp is below 40 degrees and will return in the spring with warmer weather. The last culprit I am considering is the o ring on the evap pressure sensor as that just pops the unit into the canister. What an annoyance.

[@argentosebastian]

I also have a 08 xterra and having the 442. Did you figured out what was the problem?

[@lorettacaputo6997]

@@argentosebastian Now that it is winter, I have not had that code appear in awhile. It did throw the code, when we had a warm up above 40 degrees. I expect to see it again in the next few weeks when temps go up again. I have no good answer why this happens.

[@argentosebastian]

@@lorettacaputo6997 yesterday my mechanic replaced the canister solenoid and so far seems to be working (knock on wood) kzbin.info/www/bejne/n6aXmJeNqq6ka9E @6:55.

[@lorettacaputo6997]

@@argentosebastian Good video. Brings back memories of doing solenoid replacement 2x. First was failed electronics, second was failed sealing of vent valve. I am sure that I have a very slight leak due to a faulty seal of a hair line crack in the cannister. It doesn't warrant any more time or effort as it is a seasonal problem seemingly due to the ambient air temperature. I just clear the code p0456 when it appears and be glad that it isn't anything else.

[@jhonngarcia837]

Any of the the problems make a gas leak my have that code n small gas leak when I fill up all the way let me know please n thanks :)

[@ktolon]

check for rotted filler neck , found on 03 sliverado

[@Boardinfourlife]

Encountered a p0442 small evap leak on my 3800 series 3 v6 3.8 Buick Allure Cx 2008.. it only has 75,000km on it.. when i bought it i pulled the upper and lower intake in order to free up a blocked coolant passage given the age with no previous flush.. dexcool 100,000km or every 5 years.. so 16 years later it got its much needed flush.. cleaned the throttle body new sparks.. transmission fluid 6.5 litre half flush plus much needed trans filter. New spark plugs.. by the looks of the carbon build up on the throttle body and upper intake manifold (cast aluminen 🙏) im just wondering if this code could have caused it to run hot? I only replaced gas cap and purge valve solinoid.. should i dig a little deeper? Canister valve solinoid stuck? Almost wondering if the canister it self is on the top of my fuel tank? Looks like the cylinder valve solinoid behind my gas cap underneath next to back left wheel well.. any help would be much appreciated.. thank guys

[@briansmobile1]

That's not a very common car in my area. For stuff like this, I follow the evap lines. I would expect it to be behind the fuel tank crammed behind the trailing axle or somewhere near the trailing axle over a tire or something like that. Running lean with a P074X type code can make an engine run hot, but modern cars fuel trims will let you know on a scan tool live data if that's going on.

[@Boardinfourlife]

@briansmobile1 appreciate it man, I'll have to grab my friends code reader again and live feed a drive..

[@retrocrow8172]

So how much is this gonna be

[@kuladeeluxe]

If it wasn't the gas cap, any tips for finding leaks?

[@vuhuynh702]

PURGE VALVE

[@shred9395]

Use a smoke machine to find leaks

[@tonyarguello192]

It would be nice if you place a location title to the BF where you fly 😁

[@briansmobile1]

I've publicized a couple of my favorite locations I've worked out from Google Maps and Windy.com and people have gone full retard on them resulting in restrictions, conflicts and even some property damage. I'm just going to keep my mouth shut for now. I used to hate it when pilots did that to me as a new pilot a few years ago- now I get it!

[@johnsmith-qe2fd]

Then after that silocone fix charge the customer $500 and tell them it’ll take at least 3 days because you have to wait for parts and then tell them you gave them a discount and only charged them $350.

[@mrsemifixit]

I have a 98 civic that throws a small evap leak code (tank side) ran a smoke machine through it but no visible leaks anywhere. Cap and filler neck were replaced too. One clue I have is when it’s warm outside (summer, spring) the code isn’t thrown and the system passes. But in cold weather the code is always thrown. Any ideas?

[@Deeznutz...]

Were u able to fix it?

[@mrsemifixit]

@@Deeznutz... No unfortunately. Sometimes there’s no code then randomly comes back. At this point just living with it. You have same thing going on?

[@Deeznutz...]

@@mrsemifixit yes I do and thanks for telling me this lol I think I may have OCD cus the CEL just keeps bugging me every time I drive lol

[@FabiusMaximus1000]

I have the same issue on my Chevy truck. In the summer I never get the code but when it cools off it comes back. It's always the first drive when everything is ambient temp then warms up. But once it's warmed up it doesn't come back.

[@joeb956]

When you fix the gas cap Do you have to wait for a fuel pressure cycle to run before lite goes away or is it instantaneously

[@2000jackben]

It has to cycle

[@UnknownvV]

Thank you much for the video this Jaír came up on my car and just ordered a fuel cap.

[@lilbumkinabdl34]

Is this worth fixing? My truck is throwing this code. I bought a new gas gap. The mechanic reset the light said to drive for a while and see what happens. I drove 50 to 100 miles and it came back on. He told me it could be many different problems and very hard to find where it is. I don't want to sink money into it if they can't find the leak. My truck is a 2008.

[@christophercissell879]

The best part was him almost throwing up mentioning global warming LOL

[@darklyclad]

Forget the term, what do you think emissions are doing to the environment? What do you think all those oil spills are doing to the oceans? Deforestation? Do you actually believe destroying the environment bears no consequence?

[@seinfan9]

@@darklyclad The heaviest polluters reside in the Eastern world, specifically India and China. But I'm betting you blame whitey or whomever in the imperialst capitalist system where emissions and pollution are far lower.

[@88anarahammertime]

@@seinfan9 The US pollutes two times more per capita than China, and 14 times more per capita than India. The US is definitely not a country to look to when it comes to setting a good example for pollution. China also gets 29% of their energy from renewable sources in comparison to our 11% and when it comes to spending and investment on renewables we are a pity compared to much of Europe. i like your Crusader cover pic btw its very cute. you're a good white knight.

[@kuladeeluxe]

@@88anarahammertime Where does all that plastic in the ocean come from?

[@88anarahammertime]

@@kuladeeluxe deez nuts

[@mvllivli]

"Disckinleek, disckinleek."

[@ponyxpress3]

Metal on metal spark. I don’t recommend following the wire advice.

[@Paracho650]

@biansmobile1 can you help on p0442 on a 2000 mistubishi eclipse please and thank you

[@pedrosoles4750]

My mechanic solved it by disassembling the gas tank, he changed a viton seal that is submerged in the tank. I ordered this stamp to be prepared according to the model.

[@briankirkland249]

How about the same problem in my car and I've been driving it three years just like it is I'm not paying no money to have it fixed

[@TomMack530]

Is that the same as a Saturn ?????

[@Cnightz]

Wow, the way you sounded I thought you were the dude from DEBOSS GARAGE

[@sreyra5098]

😍😍😍

[@rezagrans1296]

On a 2000 Sunfire Pon-ı-ak that has suddenly for 1sd time evur in 22 years and 195k km a CEnjinLite, koud it be that the part uv vacuum evap hose under the hood that kunekdz to the throttle body has smal krack near the end of its length. Woud that bee the kauz. Kan enybudy plz say what the diagnosdik leak" 《vacuum preshur》tesdz wil ka$d for time hourz leybur (asooming i hiyur the $90/hr man) alburduh infleyshin Jul 7, 2022 Thankzmuch fur eny help

[@chrisnas1483]

Is their a evap test to do..?

[@mr.pickles810]

Need a smoke machine to diagnose evap leak location

[@chrisnas1483]

@@mr.pickles810 thanks, I forgot... I knew that... 🤣🤣🤣

[@chrisnas1483]

@@mr.pickles810 but where do you place the smoke to see the leak, in the fuel door?

[@mr.pickles810]

@@chrisnas1483 I believe so. I never used one but another person commented saying how it helped but when the smoke hit the evap canister it was useless but I wouldnt know till I do it. I'm having a problem with my pops chevy hhr went under it the one line was really rusty where he had a fuel line leak. Which was rusted out too. Good luck! Look up on youtube might help. My newest car is a 83 c20 my others are 50s era dont have that problen lol

[@chrisnas1483]

@@mr.pickles810 flex fuel cars do this more that non flex , the leak thing.. I'll never buy a chevy impala until quality control is the way it supposed to be

[@micheal4487]

Can not believe how rust free it is!! I live where they like to destroy cars with salt.

[@rynoX88]

I nvr knew rubber could rust . Nvr seen it happen yet .

[@chrischris7462]

Hello there....rubber can rust? at 2:22

[@Cnightz]

Also thought it was funny that he said rubber can rust.

[@mrwp819300]

2:20 "Rubber can rust"

[@satyrangel2730]

holly shit

[@theadventuresofjavier8698]

Glllllllooooooobbbbblllllll wwerrrmmmnnnnn Crud ....just say cow farts...

[@leebarnes655]

Fake internet news... Cows belch to bring up their cud for rechewing, the methane is in the belch gas. More real news, termites outweigh all mammals put together and they have the same gut bacteria resulting in the same methane leak, only it's several magnitudes of order larger amount. Eating a carrot instead of a cow solves nothing to all you vegan overlord wannabees, you have to eat all the termites first.

[@wwilliams1358]

LOL! Can't say Global warring...I mean warming...it's more like Global Warning, which will lead to Global Warring, which will end up Global Warming...very warm too! Another good vid on the evap system, never knew Toyota had the system under the car...then again I don't have a Toyota anymore. These leaks can be such a pitn (pain in the neck) when trying to find them.

[@ryanvtec3885]

wish my car was two stroke

[@androiduploadsutube]

Why not take a grinding wheel to the gas filler tube. That will make that rust go away fast!

[@HigherJusticealways]

BOOM!

[@henrytoro]

I think you meant to say global warmi... Sorry I can’t type or say it either

[@ciscogok8726]

A lot of leaks

[@king49334]

I can tell it's a Toyota or lexus

[@briansmobile1]

That's right.

[@jes69r20]

Everything leaks No ho

[@MrMichaelmikemikey]

Dude…..rubber doesn’t rust 😂

[@jumpinjoe4971]

excellent evap information,but i am very interested in what about global warming makes u want to throw up.

[@ac0nsum3rbrown35]

@@BeepPeepTV and the earth is flat, right?

[@Lifeinlivingcolors]

Because it's an over exaggerated problem designed and being used to take control of the world economy. Overfishing of the seas is the real problem.

[@chevytech7306]

@@ac0nsum3rbrown35 pretty sure the 2 don't relate of course global warming is real but it's not humans that cause it... it's a natural thing that happens on this earth same as the reverse. Also another problem is government needs to quit spending tax payers money on it when they can't fix it. But still calling dude out of flat earth is like saying a girl is a guy and that she is not.

[@kyproset]

Brian, in your early videos there was a lady involved in the repairs. What happened to her?

[@willhikearizona]

She has her own channel now, D6Spanky.

[@spettro9]

How can people be pretty smart about a lot of stuff, and then totally obtuse about other things..? At the very least, stay open minded.

[@squirrelcovers6340]

Science deniers turn wrenches and flip burgers for a living😂😂😂😂😂😂😂😂

[@anthonyolvera2749]

Why does this car show up Toyota I'm looking up a ram 1500 not a Toyota video show up for a ram 1500 truck such bullshit

[@kamil9171]

I'm sorry but rubber does not rust🙄

[@jiminycricket2230]

LOL the liberals in your audience will get their knickers in a twist over the global war.... comment!! I like you 10 times more because of it!! LOL😂😂😂

[@cj1608]

yup, almost purged as you started speaking about global woooohh, oooghhhh.

[@kevinishki]

It's ok to say climate change or global warming

[@joem9380]

Not if you don't believe the ba.

[@kevinishki]

@@joem9380 that's the great thing about science it's true weather or not you believe it

[@jamesu]

Global warming is not new if the ice age was real????

[@xincarceratedx]

absolutely horrible intro sound; totally unnecessary.

[@siccandtwistted]

How nice of you to bring your thoughts on global warming I to the video 😂 not really important to the content buddy

[@michaelgayford2439]

Rubber can rust?