DON'T Let This $20 Part Ruin Your Engine! PCV System History, Theory, Operation, & Repair!

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#PCVSystem #Subaru #MrSubaru1387

-----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.-----

[yashiroku]

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

[GeoForge]

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.

[bjk]

I wish Subaru mentioned this in the service schedule. Just did mine thanks to this video.

[cryptoisaac]

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 ❤️💎🙏🏽🚗

[alisdairolavhorgen]

I've never seen a video from you that wasn't clear, interesting and, above all, useful. Thank you 😊👍.

[Mfenix]

Changed PCV on my 02 H6 Outback today. Misfire and hesitation 99% gone. Thank you for your content!

[chrishower]

By far the best explanation of what it does, the problem it solves, and possible issues. Great stuff.

[ericMT]

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.

[gregriutzel]

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.

[scottibass]

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

[jeffrey]

Excellent! There are a lot of great mechanics around, but not many who as well can teach and impart knowledge like you can.

[SkylineFTW]

Honda dealer tech here. I suggest them for these very reasons myself and I often find I'm the only one even bothering to suggest them. I do it every 50k on my personal cars for peace of mind.

[kevinolson]

My daughter's 2016 Outback was burning oil and just running terrible, no acceleration, loss of power, etc. Subaru suggested an oil consumption test. I opted to buy a new PCV valve (and hose!) after watching your video and replaced it at 108K miles. We bought the car with 103K miles. The old valve was totally clogged and not working. The car runs beautifully with the new valve. Thank you.

[edku]

You have a gift and talent of explaining workings of machinery. Excellent tutorial. Thank you very much.

[johndonato]

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!

[KentHutchins]

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.

[spelunkerd]

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.

[robsonselzelin]

As usual, excelent content, Mr. Subaru! Thank you very much for helping us keeping our Subarus!

[thesweeper]

Easy as, just checked mine after owning the car for 17 years and it was like new.

[GarageTimeTV]

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