How to test and clean a PCV valve

Рет қаралды 31,789

Жыл бұрын

This is a video on how I inspect my PCV (Positive Crankcase Ventilation) valve and how I clean the PCV valve using carburetor cleaner. You can also use brake cleaner and mass airflow sensor cleaner to remove gunk and carbon buildup inside the PCV valve.
Carburator cleaner:
www.amazon.com/Gumout-8000022...

Пікірлер: 37

@jamesdonaldson396 12 күн бұрын

Great video. Saved me a great deal of time.

@local80g 2 ай бұрын

Great test. I have never seen anyone use a balloon to test a PCV before. Thank you for the tip

@robertsummerall9170 13 күн бұрын

Good video

@GG-un5wk 8 ай бұрын

Excellent test ! Thank you

@235LAKIS 6 ай бұрын

The most critical item on this valve is the internal spring and no one mentions it..Even if the valve appears to work, if the spring has lost its stretch over time then the valve needs to be thrown out..😉😭

@Equilibrium29 6 күн бұрын

Question, anyone who knows... I bought a new OEM PCV. I blew into one side horizontally (the way it is installed on my engine) and it had an air leak. Vertically, there was no air leak. I returned it and got another one, but the same issue? Maybe my lungs are not as strong as an engine! What do I do? Order another one? On my engine (toyota) it is a difficult R&R.

@TheWilferch 11 ай бұрын

Great test.... BUT..... I'm not sure that even a "proper" functioning valve will be absolutely air-tight....like (say) a car's intake or exhaust valve is on a metal-to-metal seat. As long as the unit "clicks" when shaken and if the spring inside is predominantly pushing in the correct way to attempt a "mostly closed" condition.....I think these PVC valves are then OK. Perhaps a pro-mechanic can chime in and advise ?

@miroslavcecez8681 10 ай бұрын

You are correct. Its not function of pcv valve, main function is limit air vacuum on idle

@vermontvermont9292 3 ай бұрын

Not all pcv valves have an audible sound when you shake it.

@TheWilferch 3 ай бұрын

@@vermontvermont9292...odd.....seems all the various brands I've seen are able to be heard if shaken. If a spring is used inside, ...the spring is typically very weak and only serves to push the seat in one direction gently...as the vacuum created to activate is not very great. Which car or brand do you see that doesn't have an audible sound?....curious....

@local80g 2 ай бұрын

The PCV should seal so that you don’t put pressure into the crankcase. This is a great test to check for a weak spring.

@acidatwork 9 ай бұрын

What were the simptoms of the engine that made you to check the valve? thks.

@fixit9888 9 ай бұрын

I normally check it every two years. There was a point at which I had a high oil consumption and an engine light with a warning of a high fuel/air mixture. I decided to look at everything in the vehicle and the PCV was one of the things I checked.

@augustosousa2530 Жыл бұрын

Cool! Thanks for explanation. How many miles should this valve be changed?

@fixit9888 Жыл бұрын

There is not scheduled mile change for PCV valves as far as I know. Normally it is recommended to check and replace the PCV valve during major schedule changes. For Honda vehicles I believe that's about 100K to 120K. I think is best to inspect it every 30K miles and replace as needed. It's not difficult to check it and not many tools are needed.

@augustosousa2530 Жыл бұрын

@@fixit9888 Many thanks for you help!

@fixit9888 Жыл бұрын

@Bruce Wayne the valve is not that expensive, 75K change is a good time to replace it as a preventive measure. It's not that difficult to replace too.

@boxerdiesel 11 ай бұрын

Causa consumo anomalo di olio su Subaru ee20z diesel?

@fixit9888 11 ай бұрын

@@boxerdiesel no, no causa consumo abnormal.

@Ricsar3 2 ай бұрын

What would happen if you just removed it and put a mini k&n air breather

@VitMcG Ай бұрын

smoke everywhere

@TheChug 11 ай бұрын

I just tested with a brand new pcv valve and it will leak air just like your "broken" one does...

@fixit9888 11 ай бұрын

Does it leak out air fast or is it very slow?

@TheChug 11 ай бұрын

@@fixit9888 pretty fast. Il will keep air in if you keep it upside down. But will leak horizontally... and ballon will deflate quite rapidly.

@johnmonk3381 9 ай бұрын

I tested mine too and it "leaked" too 😂. But the size of the leak depends on how much pressure you put on the other side, if you put a high pressure, like say, you blow very hard, the "leak" gets less than if you blow lightly. So I suspect the pcv just regulates the pressure on both sides, it is not a one way check valve like you said

@DougHinVA 9 ай бұрын

They are cheap to buy and can cause major engine costs and the 'test' is not at all foolproof. Just buy and replace an OEM one at NAPA for under $10 and it is a simple replacement and can cost major repairs. Don't fool with it.... just get a replacement that is OEM.

@robertmceuen3630 4 ай бұрын

Cheap huh?? My 2014 Honda Accord cost $47 and is all plastic.

@constantincanciuc7863 2 ай бұрын

Nothing about flow? I guess this.. valve, has more than just one phase..

@mikethompson3534 10 ай бұрын

Why even test these cheap items. I just replace it and make sure that they are Oem and not some garbage Chinese knockoff because they have a calibrated air flow especially on those lousy GDI engines where oil build up in the intake manifold causes so much problems not to mention oil leaks due to the valve not sealing properly

@d4ngerous4 2 ай бұрын

Find me a 2zz celica OEM pcv valve and il ddo that, cant fine 1 anywhere

@mikman7219 22 күн бұрын

Oil can never reach the PCV valve. If it could the engine would have used a lot of oil. And the PCV valve would have been cleaned by the oil. In fact it not washed that is why it accumulates ash particles over time.