DIY - How to Replace Valve Cover Gasket on a 2.5L Engine found on Mazda 3, 6 and CX-5

DIY- How to Replace Valve Cover Gasket on a 2.5L Engine found on Mazda 3, 6 and CX-5
Do you have a leak that is going down the engine side, or it’s showing up in the bottom cover when you go to change your oil or see it on the sides of the engine when the top cover is removed? This leak is most likely due to the Valve Cover and Oil Pressure Regulator gasket haven shrunk over time and now letting oil by.
This video will show you how you can do this on your own and how simple it is.
This applies to 2.5L 4-cylinder engine, which can be found in 2014 to 2020 Mazda 6, 3, CX-5.
Parts used were Mazda OEM Parts.
Oil Pressure Regulator Gasket PY01-10-235
Engine Valve Cover Washer Seal PE01-10-2D5
Equivalent Alternative Non-Mazda parts for:
Engine Valve Cover Washer Seal amzn.to/3rv7xJy
Grey RTV amzn.to/3x2eyTp
If you are doing this fix, you must be at 100k miles or close to it. Then there might be other items that you should be checking right now as well:
-make sure water pump is not leaking
-belt tensioner
-check belts
-if you are at 100k...might want to change coolant and brake fluid too.
Please check out the other videos in the Mazda 6 Playlist: • Mazda 6
valve cover torque specs & sequence:
• DIY - How to Replace V...
As Always, SAFETY is first. Use all the precautions and safety equipment and gear at all time…depending on what is being done that includes, gloves, glasses, mask, etc.
Thank you for watching.
Please like, share and subscribe! Thank you!
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[@Username-es1iy]

Brother thank you so much for this

[@Trudeau-is-Stalin]

Thanks you. Went to trade in my Mazda 6 today and Mr manager said I had a blown head gasket upon accesment and wanted 6k off value to go to auction. Well... nice try. Only cost me 135$ to fix.

[@footprintsinconc]

awesome!! i'm glad to hear that this video actually made you $6,000!! this video hasn't even come close to giving a return like this from YT, LOL. you just made my day! Thank you for sharing.

[@manandthesea1]

Head gasket or valve cover gasket? Two completely different things. And the repair for a blown head gasket costs way more than replacing a valve cover gasket.

[@jasontodd5206]

Umm, yeah. 6k sounds like blown head gasket, not leaking valve cover gasket. Hope that car got properly fixed.

[@Trudeau-is-Stalin]

@jasontodd5206 no it was a valve cover. This video is the exact issue he pointed at. A blown head gasket is obvious to diagnose.

[@cyclist_guy-zg1zo]

A kitchen scrub pad will most probably scratch the aluminum cylinder head, creating a potential leak passage. Use a plastic razor blade (not metal) to clean off RTV. A rag soaked with brake cleaner is recommended for cleaning off any remaining residue and oil. Also be sure to clean the channel where the gasket fits in the valve cover, the hole for the VVT gasket and the VVT solenoid itself.

[@footprintsinconc]

thank you for the pointers!!

[@rrmorris67]

I think you put too much rtv in those select spots. It does not take very much. It squeezes out, especially if you torque it all down right away. I usually finger tighten all the bolts and let it sit overnight and then torque it all down. But good video

[@midnitemonty]

fyi: use RTV around the rubber gasket for the oil control valve. even a new round rubber gasket won't stop it from leaking through.

[@footprintsinconc]

Thank you for sharing Hopefully other will do this when they do this repair

[@jonathancalebgray]

I read this after installing my valve cover back on already. 😔

[@rtausx]

Thanks! This video gave me the confidence to do it myself

[@footprintsinconc]

You can do it!

[@williamfoster4268]

I just did this yesterday, the oil control valve gasket seated just fine without having to use a socket and hammer. Some recommend to put gasket maker on the outside of the OCV gasket or else the leak will come back within months. I used Permatex Anaerobic Gasket Maker (51813) instead of Mazda's overpriced RTV, reason being is RTV can cure in your head and clog oil passages if you use too much, whereas AGM will stay liquid outside of mating surfaces.

[@footprintsinconc]

thanks for sharing your experience. what do you mean by it remains liquid on mating surfaces...it too is supposed to cure otherwise it won't create a seal. this product does cure, here is what it says on their site: "Fills gaps up to .015″ and cures to a solvent-resistant seal that will not tear or decay during service. Parts disassemble easily even after extended service. Old gasket material can be removed in minutes with a simple putty knife."

[@williamfoster4268]

@@footprintsinconc Outside of the part being sealed it will stay liquid, as in it only seals where the gasket meets the head and you don't have to worry about the excess. The factory RTV on my head was just about touching the timing chain because they put so much on it.

[@footprintsinconc]

interesting, i had no idea. i would assume that it would dry up. so if you were to squirt some out on a piece piece of card board and leave it, it won't cure?

[@williamfoster4268]

@@footprintsinconc Correct, it would not cure. Any of the excess that was pushed out when I put on the new valve cover gasket is still "liquid" and can be wiped away. This consistency is slightly less than RTV. So far I have used this on my Bandit 600 valve cover and my Mazda 3 valve cover.

[@sherlottidale4496]

I have a 2016 Mazda 3 and there was Trans oil put inside with the engine oil. 🤦🏾‍♀️ Now there’s smoke coming out of the exhaust pipes and the oil has been changed along with the spark plugs but it still smokes like a chimney and when accelerated beyond 40MPH, you heat a running noise and it slows down and smokes again. 🤦🏾‍♀️🤦🏾‍♀️🤦🏾‍♀️ Idk what’s wrong because there’s no codes when I got it checked! My poor baby. 🤦🏾‍♀️

[@footprintsinconc]

not sure what advice i can give, other than take it to a mechanic.

[@rogermendez616]

Thanks a lot !!🎉 it helps

[@footprintsinconc]

You are welcome!

[@azarahwagner2749]

The gasket is made of rubber not silicone so it shrinks with heat over time. Built in maintenance scheduling and it will fail as well as the vacuum pump seals

[@footprintsinconc]

they are made out of rubber, and yes it does shrink over time. the quality of these i'm sure can be improved so that they don't leak this quickly...

[@poke2748]

You used way too much silicone in places you didn't even need it. You simply need a dab where the timing cover and the head meet as well as a small dab at the base of the rounded surface not on top. Other than that you did a good job.

[@footprintsinconc]

Thanks for the comment. i did apply more than needed. it's basically just needed where there are two metal pars coming together to seal any variance in height at those locations.

[@stevenseuffert9762]

Nice accurate and thorough tutorial!

[@footprintsinconc]

Thank you!! please help me out with the youtube algorithms by liking and sharing! Thx.

[@jonathanr2417]

Perfect video and wonderful explanation. Thank you so much

[@footprintsinconc]

Thank you! Please help out by sharing and liking, Thx!

[@sebbbou5455]

Very good video! Did you have a leak on the head of engine to do this, or just preventative maintenance?

[@footprintsinconc]

the valve cover was leaking...it was drippig all the way down

[@giannizamora7247]

Amazing video, well detailed. Thank you

[@footprintsinconc]

nice! please like and share! Thank you!

[@xvladix1234]

Hi does anybody know if the 2.0 mazda 6 valve cover would fit the 2.5 ??

[@footprintsinconc]

i would go to mazda part site, and see what the two part numbers are. i suspect they are different.

[@skii_mask_]

just did this today, and im having some shuddering after a few min of driving. it threw six codes on our first test drive but they dissappeared after we turned it off. anyone ever had this problem? im panicking.

[@footprintsinconc]

interesting. you say after clearing the codes, it now drives perfectly fine? how many miles have you driven now?

[@jlander82]

Thank you for this very thorough video!

[@footprintsinconc]

Thank you!! please help me out with the youtube algorithms by liking and sharing! Thx.

[@RajaRaja-xs1he]

is it good to buy a used 2020 mazda cx5($26k) which got it gasket replaced? I see this report in the Carfax. does this mean this particular car had some issues and fixed it?

[@footprintsinconc]

i'd get a mech to check the car out....every mechanic shop does that for your peace of mind before buying the car just becuase it had the gasket replaced, it doesn't mean the car is bad...one less thing for you to fix when you get. i'd take it into a mech and pay $100 or $200 to get the car inspected

[@darwindender5912]

Great video, thank you so much. Could you share the socket numbers you used? Also, do I need to replace the valve cover gasket if I’m only in need to replace the OCV seal?

[@footprintsinconc]

Thank you! i think the sockets were 10mm....if you have a set of sockets, you'll find the right one. I would since you have to remove the valve cover gasket. It'll be like you are starting fresh. Make sure you the RTV that i have the liked to in the comments. Please help out wiht KZbin algorithm by liking and sharing!

[@spike378]

did you replace the valve cover gasket? I plan to replace my OCV too

[@PsychoFisho]

Please tell about the online service manual you use. Thank you.

[@footprintsinconc]

nema.club/2014wsm/workshop%20manual/Home.html

[@BreadAndGatorade]

@@footprintsinconc I google this and it comes up with Northeastern Midget Association O_O Do you have a working link?

[@titocruz5798]

Very thorough; liked! What's the source of the screen shots? I'm looking online and in AllData but can't find those details for a 2013 skyactiv.

[@footprintsinconc]

Thank you! i use the windows snip it and then edit or add text in the bluebeam or a pdf editor. then screen shot it again and upload the jpeg into my video editing softward

[@ramiroborrego8458]

Did a very professional job someone said to replace that well oil ring and that y I looked at video but didn't c that

[@footprintsinconc]

Watch at 13:37 minutes and on. The valve cover gasket has attached to it the center gasket that forms an oil seal at the spark plug well. It was changed out.

[@vladster264]

Good job!

[@lanegustafson929]

A great video. Thank you very much.

[@footprintsinconc]

Thank you!

[@robert3800]

Just diagnosed with the same problem my question is the timing chain cover is wet not dripping with oil and they are saying it's from the pan gasket leaking ...does this make sense thank you

[@Btu555]

I have a 2018 cx5 53k miles that has a few drips under the heat seal so I can't see where the leak comes from, could this be the valve cover gasket? Looking at the video, it seems like if the problem is the valve cover gasket, one would be able to see the leak from the top of the engine.

[@greggaaroncadao2670]

Nice video. I have a mazda 3 2014 itouring i wonder if the part for vvt solenoid gasket that u used is the same as well for me? Because i know the gasket is the same i just wanna make sure

[@ramiroborrego8458]

Question why didn't u replace spark plug well oil ring

[@footprintsinconc]

Watch at 13:37 minutes and on. The valve cover gasket has attached to it the center gasket that forms an oil seal at the spark plug well. It was changed out.

[@theautohistorian]

Nice video my friend! Thank you for posting.

[@footprintsinconc]

Thank you! Please be sure to share and like video! Thx!

[@modernmankind]

Thank you for the video. I'm about to do this soon but I was wondering did you seal the ocv with rtv? I saw some have issues with leakage but I'm not sure where exactly to apply the rtv to the ocv. Is it just at the top once pushed in or around the ocv and use it like glue?

[@footprintsinconc]

You're welcome! Good Luck! I only applied RTV in the spots per the repair diagram i shared in the video. Please help out by sharing and liking. Thank you!

[@416diy]

The OCV seal is such a shite design. There's no way it can't leak, especially with the 0W-20 in the Skyactiv engines.

[@lanegustafson929]

I can't get the wiring clip to come off like you did at 2:09.

[@footprintsinconc]

the nib or anchor is shaped like a W for the one at 2:09, for me the one leg of W (right leg) was visible...i pushed towards the car for it, and pulled on the connected...while pulling up on the harness, the back leg of the W just unfolded downwards.

[@georgewerner8658]

Do you need to drain the oil or coolant first or are you good to go?

[@footprintsinconc]

just to replace the valve cover, neither of them needs to be drained. good luck!

[@ericmartinez8017]

Is it the same for 2015 Mazda 3 2.0 ?

[@footprintsinconc]

should be, i'd google the part number and compare to the 2.5L part number and see what the difference is

[@thrash8315]

This is a realistic approach. I am sure I am going to have as much trouble doing this when I have to replace the gasket in my wife's car.

[@footprintsinconc]

Thank you! Please be sure to share and 👍🏽

[@thrash8315]

@footprintsinconc After I bought all of the parts, she decided to trade it in for a new vehicle. Oh well.

[@alok27ish]

How much time did it take you to complete the job?

[@footprintsinconc]

about an hour i would say.

[@SlavaKolesnikov]

well done! thx

[@footprintsinconc]

Thanks!

[@timd1833]

Very detailed video. Thank you!!!

[@footprintsinconc]

Glad it was helpful!

[@fahadpasha546]

Nice work

[@footprintsinconc]

Thanks for the visit

[@doomthaking9]

Great job!

[@footprintsinconc]

thank you for the comment and watching!

[@vicjensik5985]

great step by step video! I just changed my plugs (16' CX5) and noticed oil on the spark plug threads (only in cylinder 1) Do you think this would fix the issue? Thanks

[@footprintsinconc]

Thank you! Yes, the gasket goes around the spark plug chamber, so yes that would fix that issue. I would flash a light in the hole and make sure that you can see the leak in there before doing this repair.

[@clintcoley8672]

I just changed plugs and coils on my 2016 mazda 6. I too had oil on cylinder 1 spark plug.

[@SamuelHernandez-nx6qc]

Question. Do I need to wait for silicone to cure before starting engine and if so how long?

[@rrmorris67]

24 hours to be safe

[@Hyderabadi-pilot]

Valve cover bolt size?

[@footprintsinconc]

It might be a 10mm...but if you have a socket set, it's easy to figure out what size you need.

[@niwa-ryu6985]

Do the Diesel version

[@footprintsinconc]

i don't have a diesel....i don't think we have a diesel in the USA

[@footprintsinconc]

First last commented: "Does anyone have the bolt pattern and torque spec?" answer: kzbin.info/www/bejne/aYiXeaBrrcusr6M

[@soyogen22]

Great vid. All of yours are well done. Question, how critical do you think it is to replace the Engine Valve Cover Washer Seal if there is no sign of leaking? I was thinking of just doing the gasket.

[@footprintsinconc]

Thank you! To clarify what you are asking....I assume that the "engine valve cover gasket" is leaking, so you are going to replace it. While doing so, what you are asking is, is it necessary to replace the "engine control valve gasket"? If yes, then I would replace it now as the only way to access it when it leaks is to remove the valve cover....too much work to save $15 or $20. Now if your "engine valve cover gasket" is not leaking, then you don't need to do this repair at all. I would not do this whole job if there are no oil leaks. let me know if I've clarified your question. Please help me out with the KZbin algorithms by liking and sharing and subscribing! Thx.