Fwd: 1994 V6 Audi, crankcase hose where does it go?

Tony Lum tlum at flash.net
Sun Jul 18 10:35:42 PDT 2010


On the 30V engines, this nipple is connected with a expensive ($100+) hose.  It wraps over the front top of the engine (in front of the ignition coils) and routes down the driver's side valve cover.  There it connects with the nipple on the driver's side valve cover.  The whole thing plugs into the PCV valve which routes the vapors back into the intake track.  Don't know if its the same on the 12V engines, but I bet its something similar.  The cost of the hose could be why it was never replaced.  The plastic hose disintegrated from heat and age on my car, so I currently have a 1/2" fuel line hose plugged inside of a bigger hose attached to the nipple.  Its a pretty tight fit, so the vapors aren't spraying over the engine and collecting dirt.

HTH,

Tony
'01 A4 Avant quattro 2.8 (with a made-up PCV hose)


--- On Sun, 7/18/10, tuhott at gmail.com <tuhott at gmail.com> wrote:

From: tuhott at gmail.com <tuhott at gmail.com>
Subject: Fwd: 1994 V6 Audi, crankcase hose where does it go?
To: quattro at audifans.com
Date: Sunday, July 18, 2010, 9:23 AM

It's on the the valve cover passenger side. It has a nipple on it so there
should be hose, but where does it go and what does it do? I'll take a pic
after work.


On Sun, Jul 18, 2010 at 11:58 AM, Kent McLean <kentmclean at comcast.net>wrote:

> Mark Rosenkrantz wrote:
>
>> PCV system (Positive Crankcase Ventilation) I'd think without seeing it.
>> The vapors or oil blow-by gets routed to the intake tract to be burned for
>> better emissions.  Can be catch-canned so that oil doesn't spill into the
>> environment.
>>
>
> Oddly, searching ETKA shows no results for "PVC", "positive", or
> "crankcase".
> "ventilation" turns up a "ventilation valve" that looks like it's part of
> the
> cruise control, and a "ventilaction cap" that sits on a solenoid.
>
> There is an "evaporative emissions canister".
>
> All this for a 1994 80 v6.
>
>
> --
> Kent McLean
> 1990 V8 w/5-speed and other mods
> 1991 200 TQA #3, with mods
> 1999 A4 Avant, V6 Tiptronic
> gone: '91 200 TQA x2, '94 100 S Avant, '89 200 TQ "Bad Puppy"
>
>
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