DON'T Let This $20 Part Ruin Your Engine! PCV System History, Theory, Operation, & Repair!
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- čas přidán 1. 01. 2022
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----I assume no liability for property damage or injury incurred as a result of any of the information contained in this video. I recommend safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond my control, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not myself.---- - Auta a dopravní prostředky
Subaru should be paying you as a brand ambassador or influencer because you are making me MORE LOYAL to the brand the more I know about how they're made and maintained.
Subaru's brand ambassadors get paid in an allotment they can spend on Subaru clad gear to hand out, or to keep for themselves.. but its limited. You cant even spend it on the Actual public subaru gear store website.
@@crisnmaryfam7344 purely a voluntary "job".
We live in a world where people say cars only need oil changes and regular gas, everything else is a gimmick...If you tell them why its important they laugh at you...Those are the same people that buy cars every 3-5 years... LOL
Well.. if you can afford it.. why not..🤷🏽♂️
Lifetime cvt fluid has entered the chat.
@@ralkros681 In the world of mechanical/working parts...nothing last forever. lol
@@yashiroku I was adding to the joke 😂
@@ralkros681 this is serious business....Its not a joking matter when a muffler bearing fails cuz you didnt want to change cvt fluid. smh
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I wish Subaru mentioned this in the service schedule. Just did mine thanks to this video.
I can’t thank you enough for how much money you have saved me after my valve cover gaskets blew I promised myself I would know everything there is to know about this car and do any repair by myself. Still learning but I am really proud of what I have done from the knowledge you have given me ❤️💎🙏🏽🚗
Something else I recommend, on my 96 legacy outback 2.5 ej, I had all my gaskets, including the rear main seal, replaced on my car along with the pcv valve. However after a month, all my gaskets blew out and I had oil leaks once again. It wasn't until I swapped out the 2.5 with a 2.2 that I discovered the problem. When I removed the PCV hose off the main port on the block, I discovered that it was completely sealed off with a cake of carbon deposits. This clog is why I blew out all my seals again even after I replaced the PCV valve. I recommend checking this port on the block maybe every 100,000 miles or on your high mileage engines to prevent this from occurring.
this is exactly why I am so interested in finding out installing a catch can on my 2015 @.5 NA Forrester. filtering these emissions just makes sense to me. Do you have any thoughts on this?
@@richardwilson5709 Even if there was an oil catch can on my car at the time, it would not matter because the carbon clog was on the block port before reaching the first hose in the pcv system.
@@GeoForge i dont think hes suggesting this for ur car, or as an idea that could of prevented a secondary leak.
I think he is solely thinking maybe if this had been done earlier before it was caked, i.e. his own vehicle, would that have be a good idea?
Also the fact that someone removed ur emgine and wasn't smart enough to look at ur okd pcv valve n realize that thing had to be caked up good, n not think, hey maybe i should look inside of this as well? Is sickening to me.
That car would of been lit on fire in their parking lot if that had happened to me.
@@GeoForge on side after i got super pissed for no reason (it just aggravates me to no end when someone gets ripped off, u weren't legit ripped off but u know what i mean).
Do u like the 2.2? N how do u think (i have a 2010 outback) a new 2.4 t would be? Im thinking about if i ever run into severe issues with my car pulling a good engine n hopefully trans out of newer low mileage wrecked car n going that route.
What were u able to source a 2.2 for?
@@richardwilson5709 p
Great info! One minor correction; the PCV system actually goes back to the later 1940s. I have a factory installed one in my 1951 International L170. They were sold as an option to keep engines internally cleaner for short haul and delivery trucks. As draft tubes weren't really affective below 35-40 MPH, and lube oil such as it was then, sludge and coatings on engine internals was a big problem. In the late 1950s, a Dutch engineer from CalTech and a new state board for pollution control looked at the existing valve as an idea to keep smog down by at least keeping crankcase fumes out of the atmosphere. Tests showed successful results so it was adopted by law as a 1st step, at least for CA at the time. New subscriber here, got my 1st Subaru, will keep viewing.
By far the best explanation of what it does, the problem it solves, and possible issues. Great stuff.
Thanks! Happy New Year!
Changed PCV on my 02 H6 Outback today. Misfire and hesitation 99% gone. Thank you for your content!
I've never seen a video from you that wasn't clear, interesting and , above all, useful. Thank you 😊👍.
Thank you! Glad you enjoyed it. Happy New Year!
An oil leak just started maybe a month before I saw this video. It was on driver’s side front on my 2012 Forester. Looked like timing cover. PVC had 120,k miles so I changed it as described.
It seems like the leak stopped. I even changed the plywood I park on to confirm. Yeah, it stopped.
Maybe coincidence but I’m happy, and very lucky!
when you pick up the PCV valve don't forget to get a new hose also. Mine was super brittle and it cracked when I put the new PCV in, so I had to drive for a few days with a check engine light because of the broken hose until I got a new one
Be sure to get a new PCV grommet at the same time, if the car uses one, it will probably fall apart when removed.
@@skylinefever subaru pcv valves go into a threaded port.
Excellent! There are a lot of great mechanics around, but not many who as well can teach and impart knowledge like you can.
Oh I just changed that this year on my EJ20. It’s super easy to change, just takes a little effort to remove the old hose. Mine wasn’t totally bad (I could hear the ball shake) but it’s worth changing anyway since my engine has almost 200k miles now. I also recommend changing all old tubing that you touch on older vehicles because they get hard and crack easily.
I am planning on changing mine as well. As far as getting the right part, since there are so many types of EJ20s,does the PCV valve have to be specific for your specific EJ20?
What sort of EJ20 do you have?
I change mine every 25K miles, no questions asked. It is cheap insurance. I replace the hose and/or rubber grommet as soon as it shows any damage. As I change my oil every 5K miles it lines up with my regular maintenance anyway. I hope this helps you with all your cars.
You have a gift and talent of explaining workings of machinery. Excellent tutorial. Thank you very much.
Super clear & helpful MrSubaru1387
One thing to add. PCV vacuum hoses (where they sit on the PCV valve) become rock hard with age & heat. It's easy to split the hose getting it off the valve - ask me how. Last month Subaru (Australia) had no new hose parts for a 2013 FB25. My parts dealer spoke of shortages & suggested trying a Specialist Subie wrecker. I put on transmission hose for now.
I thought I understood the PCV system, and it was fun to understand the clever design of that little ball and spring to reduce flow at idle, allow more flow at WOT, and absolutely stop reverse flow. Then I came across newer systems with turbos, vacuum air pumps, and complicated plastic intake housings. Instead of a little device that is replaced for ten dollars, in some vehicles you need to replace much more.
As usual, excelent content, Mr. Subaru! Thank you very much for helping us keeping our Subarus!
Thank you! Happy New Year!
Dude, that was a great video. We can tell that you put a lot of time into it.
Easy as, just checked mine after owning the car for 17 years and it was like new.
Just did this on my 2011 2.5i Outback. Design was a little different as it didn’t screw into the block (red topped one). There was a short hose with a metal clip. Clip was easy enough to open with a screwdriver and close with a notched hand wrench. 20 minutes and the job was done. Valve was definitely seized and the inlet line to the throttle body was soaked in oil.
Great video. Running an EJ 25D in my VW bus and had a horrible oil issue. Pooling in the intake valves and blowing crazy thick smoke. I realized my valve cover hoses were not to fresh air, and plugged in with the PCV system. I unplugged them, capped the ports and problem solved. I still replaced the PCV anyway, worth the $5. THANK YOU
Mine was puffing out white smoke upon startup and my regular shop told me it was because it was just an old subaru thing. When I brought it to the dealership for a few other things, they found it was faulty and replaced it free of charge which was really nice. I appreciated that.
Don't forget to clean threads and maybe some permatex high temp thread sealant. Haha, a few weeks too late for me after going through sparks, cleaning MAF, EGR, throttle body, found my rough idle culprit. Everybody tells me to sell my 14 Forester (60k, garage kept in FL). Bearings, AC compressor, PCV, now bushings. It's enough I never want another Subaru
All that at only 60k? At least you won’t have to do those things in the near future
@@pprb123 I was trying to find the root of the idling issue. I've had to replace AC compressor, 2 rear bearings, 6 bushings that were completely dry rotted. The car is garage kept. 14-18 Subaru's are crap. A mechanic told me to sell it before 100k as the CVT transmission will be out of warranty.
i have a 16 legacy and have never had any problems. all i have done was replace spark plugs at 98k and now i’m going into 106k strong
Ho sostituito 2 lampadine hid Xenon OEM su XV Crosstrek al costo di 164 euro l'una😢 avrei voluto delle semplici h4 come luci anabbaglianti
Thanks!🙌 New to cars and new to Subaru :) Bought an old 08 Subaru Outback having P0712 and C0115 codes and trying to figure out where the hell should i start my diagnostics.
Maybe will start with PCV. Your channel is extremely helpful. Thanks so much once again,.
I would love to see Mr. Subaru build a forged internal EJ, I think it would be cool to hear your opinions on different manufacturers of internals for a short block, as well as long block components. Much like the tool comparison videos. Happy new year, thanks for the content!
Agreed!
Great video. I like this format. If you keep doing this, I’d like to know more about the TGV system. Thanks
Glad you like the new format. Going to try to make more in this style. 👍🏻 Happy New Year!
I'm guilty of it too, but brake cleaner on bare hands, no bueno 💀
For your "once every 30k mi or so" guy that uses it just to clean the PCV, probably not a big issue, but if you're working on cars all the time, PPE sucks, but it'll keep you alive, or at least reduce your cancer and liver problem chances significantly.
As always though, thanks Mr Subaru and team! You're great, and I often use your videos to explain to others (including my kid) how various things on a car work. Even when I know what I'm doing beforehand, I also like to watch a repair before I do it, I often learn a new trick or an easier way. Many thanks!
2018 Forester 2.5i 6MT NA with catch can installed from day one. From the first 5,000 miles to every 5,000 miles after, oil change is done, catch can is cleaned. Every 10,000 miles CRC GDI valve cleaner is sprayed.
Replaced the one on our 2015 Crosstrek last week with the OEM part. The vac hose to the manifold was hard and almost brittle down at the valve end. I didn't trust it not to leak after disturbing it. It didn't come off of the valve without a fight. Went and replaced that too for good measure.
Recently bought a 2011 Forester and it's been idling a bit rough when cold, been watching your videos, PCV was a little sticky cleaned it not much improvement, watched cleaning the throttle body, started undoing the plenum 😶🤨🙄 whoever was working on it before I got the car put the plenum on with only half of the rubber collar under the hose clamp the other half was folded 90° and just pressed against the throttle body, I'm amazed it sealed enough and wasn't tripping any codes, cleaned the TB carefully warmed the folded bit with a heat gun on low got the wrinkles out, runs like it should now.
Been wanting a Subaru every since I swapped an EJ22 into my VW Vanagon, engine has over 300k now and still runs great 👍
Good idea to change the hose as well. It can get brittle and leak. When it's like that, probably time to change both.
Explained everything very well, I learned a ton. My 05 Impreza recently began idling very rough and dying. Mine had no rattle and all gunked up. Idling much better now! Thanks for making these videos!
Mr Subaru 1387 your tutorials are full of good info that I enjoy watching. My ‘15 Forrester is serviced at an independent service shop that, like you, specializes in Subarus here in north east Ohio. Still I need to know the information that you present that makes me a more informed owner. We baby our Forrester.
Always informative for us novices and easy to follow along. Thank You!
Ordered one for my 2008 Forester, thanks for the vid!
You are a legend I'm defo checking and cleaning this at the weekend. Thanks a mil 👍
Thank you Very much MR Subaru, Amazing content!!! Greetings from Chile South America
Awesome vid! Thanks Mr. Subaru, best info available.
93,000 km 2015 Legacy. It's easy to locate - but a long extension and a 19mm deep socket make it easy to get out. Mine felt a little gummy but was pretty good - no corrosion inside at all. A little break cleaner and working should keep 'er going for a good while.
Great video, excellent info. Thanks for sharing. Cheers
I was told that just because it rattles doesn’t mean it is good. There is another CZcams video that suggests using a balloon to test. Thanks for the thorough explanation.
Sometimes the shake test won't determine if it's working the right way. The spring can be worn too.yiu can also do the blow test to see if it's doing it's job. In both directions. Even after cleaning if it fails the blow test, it's bad or not operating at the right threshold. Great video
Mine the spring and internal valve/plate was completely missing (it was clean straight through hole)
Sadly this was on my WRX after i had owned it for about 3 years and then the mechanic abused it on a test drive there was smoke pouring out of the valve cover leaks onto headers.
Luckily was no other major damage to other seals except a short term leak from front of sum near the main
Great advice, low cost and easy to replace. Thanks!
You described all the issues on my old 1996 Mazda MPV, and that PVC was constantly fouled up with oil. I always wondered why they had it as a 10,000 mile interval replace item in the owner manual. I never saw PVC replacement in the 2015 Subaru outback manual, but just checked it's at the 60,000 mile interval replacement. Though some owners say 100,000K and they are still on the original Subaru PVC.
I'm a Mazda 6 guy and they eat pcvs. Even if it rattles the valve can be bad. I just replace mine every 20k.
Thank you So much I was experiencing excessive consumption of oil with my 2012 Impreza 2.0 only to realize after the valve change that it was the clogged valve causing the problem
Thanks for saving the engine from failure
Snap on tools are my favorite . Stay safe brother.
Awesome i cant believe i owned 4 subarus just bought my 5th one last month n i havent even check any pcv valves, i will check them this Spring.
Don't know why I haven't subscribed, I've been your channel for 2 years. Subscribed 👍, so if the PCV valve isn't too bad just service/clean and reinstall right! I'm looking into a little more than normal vibration at idle on my 2019 2.5i with 113k miles, plugs were replaced by Subaru at 72k as well. I'm thinking of checking plugs my next oil change and looking into the PCV valve, might replace as I drive the Outback 4 to 600 miles a week, has been super reliable from the 21k miles I got it and have 2 month oil change intervals
If you hadn't made this video I would never have known about this part. I truly appreciate this. I stopped procrastinating and changed mine out a few minutes ago. It was extremely clogged. The seal is worn. My vehicle has never been serviced in its entire life prior to me buying it. I will resubscribe when I have more funds and also buy some stickers. I do appreciate it.
I cleaned it out and it freed up a little but I just did as you recommended
My car is running so much smoother
Great video Robert, thanks !
EDIT update> After 3 days of PB blaster, I warmed up the engine, and hit the PCV with one more shot of PB, tapped gently on it for 60 seconds, and it finally came out. Small victory for shade tree guy
>>Taking a clue from this, I bought the PCV valve & hose, but even with 1/2 breaker bar and *moderate* pressure, I could not get the PCV valve out of the block, sure as hell don't want to break it. Didn't think I should try heat due to vapors. I'm going to PB Blast it for a few days and try again. ANy other methods??? Great video,, thank you Mr Subaru..
Thank you very much for your informative videos !
Awesome explanation mate!
Despite what brand of vehicle I own/drive at the time, I replace the PVC valve every 25K miles. No questions asked. It is a maintenance item in my humble opinion.
Great video... Plan on buying a new hose because mine shattered like hard plastic prying it off the pcv... Mine sounded a little sluggish so I just bought a new one...250, 000 miles at 16 yrs old, its just time....
very good presentation highly recommended
Okay buying a AOS for my STI now. Thanks !
Thank you for including which RTV silicon to use.
Glad I stumbled upon this video I notice that my oil has a gasoline sort of smell to it along with my wrx having a rattle noise where I can hear it when driving 2-3krpm on 1st and 2nd gear. I’ll give this a check for sure.
Excellent advice
Thanks for your time and efforts to protect engines
Your videos instill confidence in my car and the repairs/maintenance I do on them. I had hesitation off of idle, so I pulled and cleaned my MAF/PCV/Throttle Body and it was an immediate improvement.
thank you sir for your information new suburu outback owner 2019 cloth seats 104k miles I love nicest car I've ever owned
Wish I would have known this 30,000 miles ago before my seals started leaking. I haven’t read anything about preforming this during regular maintenance intervals. Thanks
Exactly. I don't think it's in the maintenance schedule. Mine clogged and blew out crank and cam seals at 90,000 miles. So I had to replace those and basically do the timing belt at the same time, 15,000 miles early. $$$.
I was going to replace mine, on my 2015 3.6 R Outback at 60k miles, but got sidetracked, and didn't do it until 70k miles.
When I replaced it, the old valve was rattling, but I could hear sludge dulling the clicks.
Anyway, while replacing the valve, I noticed the vacuum hose looked crushed!
Like the vacuum had drawn it in and cause it to become disformed.
I went ahead and replaced it, with an OEM hose.
The PCV valve was OEM as well, because something this important, deserves a couple extra dollars, for peace of mind.
Just a heads up, to those replacing the PCV valve on higher millage engines, make sure to inspect the vacuum hose as well!
Thanks for the reminder!
Thank you for the great explanation
Great video! I think I definitely will check my PCV valve and change it if need be!
However, I have a big question! Are EJ20 PCV valves universal for all EJ20s? I have an EJ206 (twin turbo one), would I have to get one specific to the EJ206? Or will one from any other EJ20 work?
Or does it have to be from another DOHC EJ20?
Best video I have ever seen so far...
Thanks for the Video.
Excellent educational content and video ✌️😎👍👍👍👍👍👍👍👍👍👍
Had to replace mine last year. Was so glad it was right there in the top. Easy replacement.
Thanks man, I needed to see that.
Thanks
Great explanation
The one using grommet is a hell of work trying to remove it...it just stucked on the grommet and have no idea how to pull it off without using heavy tools that will break it...I think the threaded version is better than the grommet type...easy to install and remove
back in the old days before you were born, and headers were popular on small blocks of every make, we used to vent the crank case vapors into the the header collectors an angle
That's not before my time... Lol how old do you think I am? Saw that all the time in my drag racing days.
Thank you. Very helpful
I’m dealing with this on a beater of mine right now. Car ran great fir the 20 min after I bought it.
I just changed my pcv hoses and valves on my 2010 WRX. My pcv was stuck closed and it was leaking oil on passenger valve cover. The hoses were hard as a rock too.
Thanks for the tip. Got a 2011 Legacy 2.5i and inspected the pcv valve after watching the video. I noticed that the housing was CRACKED because it was made out of rubber that housed the PLASTIC pcv vavle. Had to buy the whole housing instead of just the pcv. Does the plastic one work differently? The new one didn't rattle when I tried the shake it.
What Mileage would you recommend replacing the PCV on a 2018 3.6? or do you wait for signs of failure? Love the channel!
Great lesson.
Great vídeo as usual
Thanks! Happy New Year!
Mr. Subaru is great.
My 2014 Suby Outback 4 fist boxer has a rough idle and hard to start no codes so I am hoping the PCV valve is the cause, but when I went to replace it the hose is hard as a rock! so I am waiting for the hose to get here first then I can replace it and see if that helps. 160k miles. I already cleaned the MAF airflow sensor and cleaned the throttle valve body
very helpful, Thank you.
You're welcome! Happy New Year!
Well done!! Thinking about a 4 cal Subaru SUV if they ever get any in stick without ridiculous increase $
How well do the engines hold up. Would u suggest these over Toyota or Honda? Thanks!
This actually happened on my jeep 3.7L Cherokee barely caught it in time but by this time it’s caused a lot of damage. Rings are bad now and I’m using a quart a week and it smokes often
Thank you Mr. Subaru! Thanks for your excellent and clear explanations on Subaru service and maintenance.
Too many notes, dear Mozart, too many notes 👌
Swapped my EJ20 PCV Valve a week ago for a +06 WRX Valve so I could install an AOS
TY for the lesson
I changed my PCV valve on my 2013 Crosstrek and went ahead and changed the hose also. Where the hose attached to the valve it was brittle and cracked.
I have a 2019 Forester, 2.5L engine. There was talk one one of the Subaru forums of the PCV actually failing in place and pieces falling into the engine. Lots of white smoke coming out the tail pipe. The engine had to be taken apart. There was no recall on this in Canada but I bought one anyway, PCV valve #11810AA200, made in Japan, Canadian $33.39 incl tax. Needs 22mm deep socket. My mileage is low, 25,000km. Plan on replacing the PCV in Spring 2023.
would you recommend installing a catch can on a NA 2015 Forrester, to limit un filtered pcv air from circulating right back into the intake? Wouldnt it be the same issue with recirulating unfiltered exhaust output right back into intake via the EGR?
Shouldnt these flows be filtered.?
The ej255 and 257 have a PCV assembly and dealer will only sell it as an assembly ($60)
If you are careful you can remove it from the junction and install a new one. The pcv is inside the black plastic portion of the assembly
Hi there. Just wanted to share my experience. This little part cost me around 1800 dollars. From 2 mechanics. One day out of nowhere my car sounded like it had a cam. I thought maybe it was the timing jumped or something, I took it to someone and they took the motor apart, replaced the timing belt, and head gaskets, Then I took it to another guy after the problem wasn't solved, he actually broke my intake *Don't ask me how* and the work he did didn't fix it. I finally got fed up with dipsh*t mechanics not doing proper work and solving small problems at a time. SO I did the work and Bam. within an hour I found out my PCV valve was shot and the hose was NOT connected. FUN FUN FUN ON THE BUN!
P.S. Do not take your car to the "My boi does it for cheap" "mechanic" types
Thanks for the video
Thanks for the information, now how Miles is when we need to change the pcv valve ?????
That’s awesome video thanks for sharing At what mileage do you recommend to change out the valve
3yr/36k miles
Thanks Mr. Subaru for your efforts. I was wondering whether or not AOS can replace the PCV system?