DIY Crankcase Vent Valve, aka PVC valve, replacement

[JaaTee]

Does anybody have any DIY tips and or advise on how to replace the Crankcase Vent , aka PVC valve, on my 05 B6 A4 1.8t?

Mine is the 06A-103-245-F variety. The one that looks like a " T " with an extra nippel on the side.

Thanks in advance.

JaaTee

[egovreau]

Does anybody have any DIY tips and or advise on how to replace the Crankcase Vent , aka PVC valve, on my 05 B6 A4 1.8t?

Mine is the 06A-103-245-F variety. The one that looks like a " T " with an extra nippel on the side.

Thanks in advance.

JaaTee

Purchase the 034 breather kit, which will eliminate the plastic (prone to cracking) and rubber (prone to softening).

As for how, it's up to you. One school of thought is to remove the intake manifold, which does make it easier to clean out the block breather connection if it disintegrates upon removal. I was replacing the thermostat on my car, which had the throttle body and alternator removed, allowing me to go in under the intake without removing it from the front of the engine.

[16vCorey]

I did mine with the intake manifold on and it took me 30-45 minutes, and 90% of that was getting the chunks of the old valve out of the breather block.

[mamboyoyo]

I am planning to do the same job, but have a question with the hose routing. Upon inspecting my newly acquired 04 B6, I discovered the backside of the T that includes the PCV was not connected to anything. Then I found a hose coming from the the Y fitting on the back of the valve cover housing that was just shoved down to dump below the car. I assume this hose was supposed to connect to the backside of the aforementioned T which makes sense based an diagram I found. So I plan to replace and reconnect those parts. I found this photo in an earlier thread, which shows a hose coming off the back of the T, which is what I assume I would see on mine if it wasn't disconnected. My question is, was this hose used in place of the multi-bend hard-line looking part in the replacement parts kit photo? And if so is it recommended to stick with the hose or go with the OEM style hard-line (or am I off-base here and the hard-line actually goes somewhere else)? Thanks for any clarification.

[Charles.waite]

The problem with removing the manifold to do this is you then discover all the other shit around the PCV that is also broken, cracked, leaking, and generally borked.

/s

But yea, unless you have tiny hands, remove the manifold. Having done it both ways, it pays to get that aluminum monstrosity out of the way. Especially if this is your first time digging into the PCV.

[rocket1420]

Couldn't you get some room by removing the alternator? I did mine with the intake manifold removed as well, but it was part of a huge overhaul.

[khancept94]

I just did this for myself and boy did i have an unpleasant experience. The thing that took me the longest was getting the C clip off that secures the first pipe to the crankcase. The second problem i had is that the bleeder valve that comes with the 034 motorsport silicone hose is only a 1 way port where as the stock valve has a second port. I now have an open metal port behind the valve cover beside that 3 way connector that connects the new breather hose to the valve cover and the pancake valve.


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[khancept94]

Not to mention the 3 way connector from 034 doesnt even fit onto the metal tip by the valve cover, nor did the kit come with a new O-ring for the crankcase breather...


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