Help! Oil part that I can't name is broken!

[rayray086]

is that the oil catch can down under the air filter? does the oil travel all that way? there is also another hose that connects to a tiny pipe on the intake side of the PCV. Is that important? I'm going for another JB Weld just to buy some time but like the idea of the catch can...


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Correct, that's the catch can down near the air filter. The intake side of the PCV is joined to the outlet of the catch can. It is against emission laws to vent the engine vapours to the atmosphere so the proper way to do it is to connect the catch can to the intake. A good catch can should have baffles inside which trap the oil.

The PCV is there to regulate pressure within the engine, it's not meant to be a passage for oil. The build-up in pressure within the engine causes air (and with it, oil and oil vapour) to flow from the engine to the intake.

[stefcio007]

Had my JB weld fail today after about 1.5 years.
Temp fix with parts lying around.


The top small tube goes all the way to a canister at the front of the car and then back again through an clear tube. It has electrical plugs so must be checking for something, but what does it do?
Wondering what fix I should do this time.

[cliftronix]

Small clear tube is the fuel tank breather which gets fed into the charcoal canister and the back into the intake.
I removed this all and put a breather before the clear tube starts, and removed the pcv aswell. No idea what the plug checks but i only get one code with it all unplugged lel. Makes for a cleaner bay, also means it is very easy to have a CAI.

[stefcio007]

Someone needs to make a writeup sticky with possible solutions and their effectiveness.

Yeah, where the canister is, is where I want to pull air from. The whole 2 tube setup appears to be doing nothing at all.
The other end of my clear tube seems to disappear somewhere close to the firewall.

It just feels like this whole thing has been over engineered.

[HaydEn]

Someone needs to make a writeup sticky with possible solutions and their effectiveness.

Yeah, where the canister is, is where I want to pull air from. The whole 2 tube setup appears to be doing nothing at all.
The other end of my clear tube seems to disappear somewhere close to the firewall.

It just feels like this whole thing has been over engineered.

1. Plenty of information already on the Internet including this forum.
2 . It's not really meant to do a great deal so not sure what your hoping for?
3. It's a vw. Everything is.

[stefcio007]

Fair enough.

[Jolteon]

I broke my PCV a while back and converted it to run through a catch-can with an in-line generic PCV valve from repco. Not the prettiest solution, but it does okay for a DIY hack job.