I've got a 98 2.8L with a pretty major oil leak issue, and after a bunch of research I'm pretty sure the crankcase vent. system is to blame. I read that cleaning/replacing the suction pump valve can significantly reduce the pressure and oil leakage. So I located it at the back of the motor near the air intake and the thing looks clean as a whistle. Upon further research, the pictures I found look nothing like under my hood. My valve covers have no bulging hose hook-up on top for the vent system. To my untrained eye, the only hose hook-up is a small one on the front of each flat top cover, with the hose running in front of the silver manifold which does have some gunk in it. I can't seem to find any info regarding this setup. Does this sound familiar to anyone? If so, how do I go about cleaning my vent system to relieve the crankcase pressures? Am I even on the right track?!

 

I have 98 2.8 that I just did this to and it either totally cured my leaky VC or significantly reduced it (too ealry to say its 100 fixed)

Go to amazon and get this

URO Parts (078 103 224R) Breather Hose

Cost 33$.

 

Ps. I don't know when the 30V started, but that is why I have and that hose fits it

If you don't have 30V then it might not be the same. Not sure

 

Engine cover says 5V, let me see about getting some pics of it...

 

Didn't load the images the way I wanted, but at least you can see what I'm talking about...



On this one you can see the black plastic hose going from cover to cover in front of the intake manifold.



This shows a close up of my passenger valve cover, which doesn't have the bulging breather hose hook-up I keep seeing in all the photos online

 

I can only see the last pic. It's hose in lower right corner of pic. Plugs into end of vc. I'm not near my car but think it routes across to other vc, going next to coil on its way, then (I think) two more connection closer to firewall, back by all the vac hoses

 

I clicked on other two pics and saw them. Yours looks just like mine and has the hose I gave link to. I think whatever you are seeing online are (must be) of different motors.

Also 5v is per cyl, 30v total

 

Cool, thanks man. Yeah, I kept searching "98 audi a4 2.8L" and all the motors had the same bulging valve cover-I was starting to think I had a Frankencar. I kinda thought the 5V meant per cylinder, but wasn't sure I'm no mechanic, so I'm bumbling around in the dark half the time! How much time/work am I looking at to replace the breather hose?

 

I'm no pro either. I had never swapped one out either. I didn't take long, but I do recall that getting old one off was more frustrating than installing new one. I ended up just cutting some/most of the old off vs. trying to get all the clip things to release and pull off.