Correct PCV Part Number

[texadelphia]

When I look up the PCV for my car on ECS I get part number 06F129101P. But when I put that part number into my local dealer parts website it says that part is not compatible with my VIN and says I should be using 06F129101F or 06F129101C. I would assume that the newest revision would be the best. Anyone else run into this? My car is a 2008 with the 2.0T.

[MacFady]

In addition to indicating the revision, I think there is also an early versus late VIN compatibility component to this specific situation as well. The correct late VIN part has a check valve in it I believe. I think the R revision only replaces/supersedes C, F, K, L, and N. I don't have a B7 but I'm sure someone who has gone through this will chime in. Europaparts.com has a real time chat function that's useful, they respond quickly, just give them your VIN. I've used it multiple times for this type of situation. Even if you don't get the part there. They've never steered me in the wrong direction.

[rbjeepthing]

Just replaced mine and the breather tube on an 08. 2 weeks in now and everything seems fine. Checked breather tube and PCV tubes which I felt had excessive oil in each before and now very small trace more of a vapor.

I was told by Audi I needed these two parts which were matching:

#06F129101P (PCV)
and
#06D103225A (Breather Tube)

[Brillo]

When I look up the PCV for my car on ECS I get part number 06F129101P. But when I put that part number into my local dealer parts website it says that part is not compatible with my VIN and says I should be using 06F129101F or 06F129101C. I would assume that the newest revision would be the best. Anyone else run into this? My car is a 2008 with the 2.0T.

I believe that there are only two to choose from now. It's either the early version #06F129101R (check valve in the most forward part of the PCV valve) or the late version #06F129101P (check valve moved to the top of the front right hand side breather port tube that runs to the pre-TC port). The PCV valve can be identified by looking down at it as shown in the picture in this link (post #10). https://forums.fourtitude.com/showth...-tube-revision

[Brillo]

If you are replacing the new version make sure the check valve in the breather tube going to the pre-TC port is functioning properly. You should be able to freely pass gas through it from the VC towards the TC but no gas should pass in the other direction.

[joepickems]

Brillo you are one knowledgable guy here!

I believe that there are only two to choose from now. It's either the early version #06F129101R (check valve in the most forward part of the PCV valve) or the late version #06F129101P (check valve moved to the top of the front right hand side breather port tube that runs to the pre-TC port). The PCV valve can be identified by looking down at it as shown in the picture in this link (post #10). https://forums.fourtitude.com/showth...-tube-revision

[EvolutionArmory]

Yes. Early cars take a R valve with the check valve in it and a blank breather tube.

Late cars are reversed.

If anyone is unsure of what parts they need I suggest you get your PCV parts from the dealer by VIN. Then there is very little chance of getting the wrong one.

[texadelphia]

Just talked to the parts department at the dealership. This is what they told me.

PCV - 06F-129-101-P
Hose - 06F-103-221-H
Gasket - 06F-103-483-E

[Brillo]

Apparently your dealer changed his mind regarding part number compatibility. The number for the PCV valve is the late model version - same number that ECS provided you in your OP. This makes sense because you have a 2008 model year. The "Hose" you listed above is the one that goes from the PCV valve to the IM. The is not the breather tube that goes from the right front of the valve cover to the pre-TC port, which is the one with the check valve in it. The gasket is the PCV valve to VC gasket. If you don't need to update the breather tube to the pre-TC port, make sure the check valve in it is working properly. It should allow flow only in the direction from the VC to the pre-TC port and nothing in the opposite direction.

[texadelphia]

Apparently your dealer changed his mind regarding part number compatibility. The number for the PCV valve is the late model version - same number that ECS provided you in your OP. This makes sense because you have a 2008 model year. The "Hose" you listed above is the one that goes from the PCV valve to the IM. The is not the breather tube that goes from the right front of the valve cover to the pre-TC port, which is the one with the check valve in it. The gasket is the PCV valve to VC gasket. If you don't need to update the breather tube to the pre-TC port, make sure the check valve in it is working properly. It should allow flow only in the direction from the VC to the pre-TC port and nothing in the opposite direction.

I think the dealer website is just wrong about part compatibility.

Would replacing the breather tube to the pre-TC port just depend on if it's working correctly, or does the revised PCV require an updated breather tube design?

How does one check the breather tube? Disconnect it and try to blow in both ends?

[Brillo]

Yes, if it is working there is no need to change it. They do occasionally fail though. Two ways to check it. If you have suction you can apply suction through the front VC port of the PCV valve. if it holds suction, it's working. This, of course, assumes you have no leakage in the passageway of the VC. Then blow through the port. It should flow freely in that direction.

The other way to check it is to remove the breather tube, clean it, stick it in your mouth and blow and suck on it. Same as before - you should be able to blow through it easily but not be able to suck anything.

[texadelphia]

Great. Thanks for the direction. Can't wait to make out with my engine!

[Brillo]

If you happen to make a video of it, please don't share.
Good luck.

[texadelphia]

Yes, if it is working there is no need to change it. They do occasionally fail though. Two ways to check it. If you have suction you can apply suction through the front VC port of the PCV valve. if it holds suction, it's working. This, of course, assumes you have no leakage in the passageway of the VC. Then blow through the port. It should flow freely in that direction.

The other way to check it is to remove the breather tube, clean it, stick it in your mouth and blow and suck on it. Same as before - you should be able to blow through it easily but not be able to suck anything.

Is the breather tube you're talking about? I replaced the PCV this weekend but the only tubes I had are the ones that connect directly to the PCV valve.

IMG_20181118_134915691.jpg

I've been getting puffs of smoke out of the exhaust under heavy acceleration so I'm wondering if this is the culprit. I didn't take it off to check it because I didn't have any hose clamps that would fit. I have the car in the shop for control arm bushings and I'm going to have them check the intercooler ducts for excessive oil buildup to see if that's causing the smoke. I just had a compression test and it passed with flying colors so I don't think I'm getting oil past the pistons.

[texadelphia]

Shop confirmed no oil in intercoolers. I guess I'm down to this breather or a cracked valve cover causing the smoke.

[Brillo]

Is the breather tube you're talking about? I replaced the PCV this weekend but the only tubes I had are the ones that connect directly to the PCV valve.

IMG_20181118_134915691.jpg

I've been getting puffs of smoke out of the exhaust under heavy acceleration so I'm wondering if this is the culprit. I didn't take it off to check it because I didn't have any hose clamps that would fit. I have the car in the shop for control arm bushings and I'm going to have them check the intercooler ducts for excessive oil buildup to see if that's causing the smoke. I just had a compression test and it passed with flying colors so I don't think I'm getting oil past the pistons.

Yes, that is the right side breather tube. The check valve is under the clamp shown in your photo.

There are other possibilities for the smoke you are seeing. 1. The oil seals in your TC could be starting to leak pushing some oil into the exhaust system. 2. The piston rings. I have no personal experience with this but have been told that the Audi 2.0L ring problems relate to the oil control rings (oil scraper rings). If this is true, a compression test will not tell you anything about the condition of these rings. If they are malfunctioning they will be leaving too much oil on the cylinder walls which will burn during the combustion stroke. 3. Start-up smoke can also be the result of valve stem oil seals. This tends to happen only on cold start-up as the oil has time to trickle down the valve guides into the exhaust ports which gets burned off on engine start-up.

[texadelphia]

I finally got around to replacing the breather tube this weekend and there was a fair amount of oil buildup inside the tube. Is this normal or should it be fairly clean in there? I guess it could be old oil from before I replaced my pcv if it was bad. I haven't really noticed much smoke on heavy acceleration since I replaced the pcv but I am still going through a quart of oil every 1200 miles or so.

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