[V8] Excessive Oil and Emission Pressure

[ville.hiivola at suomi24.fi]

It's a -92. I see it in the picture too, i took from ETKA. In mine, it 
was visible through the tank cover opening, to the left side, inline 
with the breathing hose.
I found this also in ETKA online, part number 18 in this illustration: 
http://etka.auto2.ru/epc/cat/au/V8/1992/90/50/995885/
Someone else should try this too, so it could be confirmed it's the 
cause of this problem.
Thanks Tom.

Ville

>----Alkuperäinen viesti----
>Lähettäjä: chance9121 at gmail.com
>Päivämäärä: 27.09.2009 23:01
>Vastaanottaja: <ville.hiivola at suomi24.fi>
>Aihe: RE: [V8]     Excessive Oil and Emission Pressure
>
>That is interesting what year is yours again?  I don't remember a 
valve like that on the 91 ill have to check.
>
>---- Original Message ----
>From: "ville.hiivola at suomi24.fi" <ville.hiivola at suomi24.fi>
>Date: 9/27/09 3:45 pm
>To: "v8 at audifans.com" <v8 at audifans.com>
>Subj: [V8]     Excessive Oil and Emission Pressure
>Well, i think i found out the problem. Few days ago my car wouldn't 
>start and i found out fuel pump wasn't working, so i replaced it. 
Well 
>the whine didn't go with that. But then i noticed that the 
>"breathing/venting valve" was making the sound. It's the one 
connected 
>to the line going to the tank cover. I took that valve out and 
tested 
>it with vacuum pump. I was able to make the valve do the "whine" by 
>aplying vacuum in one direction and restring it a bit. I'm not quite 
>sure if this valve is basicly a check valve, or what it's purpose 
is.. 
>But it was flowing in both directions, so i suspect it wasn't 
working 
>correctly. Anyways i had one check valve handy so i replaced it with 
>that and now the whine seems to be gone..
>I hope this helps.
>
>Ville
>
>>----Alkuperäinen viesti----
>>Lähettäjä: toml99 at todomundo.com
>>Päivämäärä: 23.09.2009 19:31
>>Vastaanottaja: "v8audi"<v8 at audifans.com>
>>Aihe: [V8]    Excessive Oil and Emission Pressure
>>
>>Well, Ville, I read your idea about the gas cap and I went out and  
>>switched caps and I didn't hear the noise!  I got excited and 
>started  
>>to write a reply, then figured I'd better actually warm the car up  
>>and drive it around.....Heard the noise again within a few  
>>blocks......so it's not the cap in my situation.  Mine's coming 
>from  
>>under the fuel pump plate and I'm confident that it's either the  
>>pump, or maybe just the check valve like the my old saab.  The saab 
>I  
>>rebuilt for my girlfriend's daughter also made the same noise, and 
>it  
>>came with a spare fuel pump.  When I went to replace it, I noticed  
>>the "prepump" harness(2 pumps) was disconnected....plugged it in 
>and  
>>noise went away.
>>I noticed in the manual that there's also something called a 
>"Venting  
>>and breather valve"....and a Gravity valve....hmmmm venting and  
>>breather valve...that sounds like something that could make my  
>>noise.  Book shows it on top of tank,inside of a larger "support  
>>hose".  Anybody seen this valve before?  By the diagram, it looks  
>>like 1 more thing to be passed on to the new owner, but since a 
few  
>>of you have the same noise, it would be nice to figure out if 
it's   
>>not a $150 fuel pump...Tom
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>
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