GBW

I'm still trying to isolate my "hiss" from 3,000 RPM and up, and my latest adventure was to replace my PCV valve and Suction Jet Pump to eliminate those from the mix. Unfortunately, I still have the hiss, but I hadn't seen a post on how to replace the PVC valve for the ATW engine, so here are some ETKA pages that may help future efforts. Most of the ETKA pages I found were for different engines.

The PCV valve lives under the Intake Manifold; in a location only an engineer could love. In speaking with a technician and parts employee, we decide to replace the parts that are more common to fail:

# - Part
2 - Plastic tube
3 - "O" gasket ring
6 - PCV Valve
5 - T-hose

For reference, item 1 is a plastic piece that attaches to the engine block under the Intake Manifold.

A few items that my help:
If I were to do this again, I think I'd remove the Intake Manifold and replace every single vacuum hose, check valve and PCV component while I had complete access. My hands are a bloody mess and it took probably 6 frustrating hours to complete the job. Yes I am an amateur mechanic.

Item 4 is a clip similar to the one on the fuel pressure regulator valve. From the factory, it clips in from the top engine block side of the opening. You can see it between the intake manifold for cylinders 3 and 4. I had a very difficult time returning it to the original position on the top (I gave up trying to use a screwdriver with the clip taped to it), but I was able to clip it in from the bottom (180 degrees from the original position) by reaching underneath the manifold and pushing it towards the block. Access that way was quite easy.

I also installed the components in pieces because I found I didn't have enough room to get the assembled pieces into place as a unit. There was always something in the way. I installed the PCV valve into the T-Hose and installed the T-Hose onto the metal pipe that wrapped behind the engine. Then I installed the plastic tube onto the T-Hose and clipped the other end into the plastic piece that is attached to the engine.

Be sure to have plenty of LONG extensions for your sockets and numerous long screwdrivers. It's a long reach through or around the intake manifold. I'd also suggest you wear gloves....I wish I had.

I guess my next stop along the way to isolate this hiss is to try the "ape" test for the wastegate.

Here are some ETKA pages for the ATW engine:
<a href="http://s152.photobucket.com/albums/s189/GBW_Audi/?action=view¤t=ETKAPVC.jpg" target="_blank"><img src="http://i152.photobucket.com/albums/s189/GBW_Audi/ETKAPVC.jpg" border="0" alt="Photobucket"></a>

<a href="http://s152.photobucket.com/albums/s189/GBW_Audi/?action=view¤t=ETKAVacuumHoses.jpg" target="_blank"><img src="http://i152.photobucket.com/albums/s189/GBW_Audi/ETKAVacuumHoses.jpg" border="0" alt="Photobucket"></a>

Allroady DungBeetle

Cool..... but ahhh, it's PCV - not PVC. ;-)

GBW

Whoops...too much house work!

Pscheoverdrive

If you listed part #s, that would be awesome... Still have them, I hope!

ModifiedA4

<img src="http://www.modifieda4.com/images/a4-parts/a4_intakemanifold_1.jpg">
&gt;img src="http://www.modifieda4.com/images/a4-parts/a4_intakemanifold_1.jpg"&gt;

ModifiedA4

5: 06A 103 247
6: 035 103 245 A

<img src="http://i152.photobucket.com/albums/s189/GBW_Audi/ETKAPVC.jpg">

HJB

may also be in Audiworld tech
http://www.passatworld.com/forums/showthread.php?t=196909

and ETKA link (I'm sure there's others)
http://www.passatworld.com/forums/showthread.php?t=228021

ModifiedA4

'positive crankcase ventilation'

Pscheoverdrive

Poly Vinyl Chloride... :P Thanks for the ETKA!