TGK

As you can see I've undone the clips, but started to yank on the pipes and heard some hissing. Is it just a vacuum line, or is it a fluid of some kind. I'm doing the Aux coolant pump, and there are a few different things then in the write up...mainly the POS Sai pump! And this F style hose
<a href="http://s17.photobucket.com/albums/b87/KTGMEASAP/?action=view&current=IMG_0897.jpg" target="_blank"><img src="http://i17.photobucket.com/albums/b87/KTGMEASAP/IMG_0897.jpg" border="0" alt="Photobucket"></a>

thanks

4Driver4

Hard plastic line out the base of the F goes to the brake booster.

This is a great time to change the suction pump and check valve.

TGK

will removing green and black plastic hoses leak fluid?

4Driver4

They are part of the vacuum and crank vent systems.

TGK

Thank You!

radhaz

at http://www.tobio.info/passat/howtos/camsealleakhowto.html while looking up the suction jet pump:

Camshaft/Valve Cover Leak Diagnostic
1998-2005 VW Passat 2.8l V6 Tiptronic Models ONLY - Does not apply to manuals

Disclaimer: documentation for informational purposes only. No warranty is implied. Following these steps may lead to personal injury, death, dismemberment, mayhem, or voiding your vehicle's manufacturing warranty. Now, with that out of the way...

Leaking camshaft adjuster seals and valve covers are a very common problem on 2.8l V6 Audis and VWs. Often, the fault is misdiagnosed and repeated attempts are made to change these gaskets to no avail. Apparently, the real cause of the problem is a clogged breather system, which causes oil to blow out the seals.

Quote the TSB:
"Misdiagnosis of oil leakage from valve cover gaskets may cause unnecessary replacement of camshaft adjusters or camshaft adjuster gaskets"

VW has issued a TSB, 15-07-01, that addresses this issue. If you are having your dealer service this problem, point out the existence of this TSB.

For the DIYer, here is the procedure based on the instructions in the TSB, adjusted for those of us who don't have access to the official VW tools.

Tools needed: VAG-COM, decent pressure guage that can read down to fractions of a PSI

The test for a crankcase pressure issue:

1. Hook up a pressure gauge to the dipstick tube
2. Hook up your VAG-COM, go to the Engine Electronics screen, and read the measuring block for channel 120
3. Start Vehicle, shift to D, hold down the brake pedal, apply parking brake, chock wheels. Do this or risk injuring people, property, or pets.
4. Press the accelerator pedal until the RPMs hit 1600, and the measuring block reads 120Nm
5. Read the pressure gauge.

- If it exceeds 30Mbar (0.43 PSI) then you have a crankcase ventilation issue. Replace the suction jet pump (the three-horned thingy under the sensor pack at the back of the intake manifold, part number 058 133 753 B), the green check valve (p/n 078 905 291B), and/or the breather lines.

Here's someone else's howto for replacing the suction jet pump. (opens in new window)

- If it is below 30Mbar (0.43 PSI), you have a for-real oil leak.

Simple, huh?

audikillsbmw

Your air pump is all the way up there? Weird.

TGK

oh btw, I couldn't get the hoses off the pump and green thing....STUCK on there

audikillsbmw

My air pump is located behind the passenger side fog light : ))

Grapeking

good find. That's a real issue on some of our cars, nice to find a test for it.