[s-cars] ANN with major oil leak

[Lino M. Valadas]

Thanks Joe and Paul

I have ordered the diaphragm valve which Audi calls "Pressure Regulating
Valve" part # 034 129 101 A, because mine is definitely shot.  Your
evaluation of the problem makes a lot of sense.

Now, I wasn't aware of a PCV valve on this engine, but there is a bleeder
valve (Audi speak) under the manifold.  Would this be the PCV valve on this
engine?  I will take a look at later to see if it's functioning.

Cheers

Lino



----- Original Message -----
From: "Joe Pizzimenti" <joe.pizzimenti at gmail.com>
To: "Lino M. Valadas" <l.valadas at rogers.com>
Cc: "s-car-list" <s-car-list at www.audifans.com>; <sos-cars at yahoogroups.com>
Sent: Sunday, October 24, 2004 11:25 PM
Subject: Re: [s-cars] ANN with major oil leak


> Lino,
> That should only be a one way valve (crankcase vent to intake
> manifold, not the other way around) or there wouldn't be a valve
> there.
>
> Just went through this on the Evo.  When the PCV diaphragm tears,
> instead of the crankcase pressure going to the intake manifold, all
> 26psi of RS2 goodness (in your case) goes through that valve, into the
> crankcase and not being content to stop there, it follows the path of
> least resistance (hopefully the dipstick tube).
>
> Replace PCV, problem solved.
>
> Joe, no more Evo oil fountain, Pizzo
>
>
> On Sun, 24 Oct 2004 22:15:06 -0400, Lino M. Valadas
> <l.valadas at rogers.com> wrote:
> > After a great day at Mosport Ontario today, I drove home with hardly any
oil
> > left in the crankcase. Of course I did not know it at the time, but
decided
> > to check my oil level on I got home and that's when I found out.
> >
> > Futher investigation revealed a major oil leak from the crankcase
> > ventilation plumbing.  The drivers side (North American car) of the
engine
> > and surounding areas were completely soaked and driping with fresh Mobil
1.
> > Has anybode experience this?  Are my compressing rings going?  I had
done a
> > compression test recently on the car (93 S4 with 153K km) and all
cylinders
> > were good at 150 lbs/sq".
> >
> > Also there is  some sort of valve between the crankcase and the head in
the
> > vent pipe.  Does anybody know what its function is? I checked it and it
> > allows air to pass both ways.  Should it?   I have the Bentleys but
there is
> > no description nor reference to the crankcase ventilation system.
> >
> > Any info would be appreciated.
> >
> > BTW the car performed flawlessly at the track.  The BIRA system 3 was
> > awesome.  I did not let the 20vt crowd down.
> >
> > Cheers
> >
> > Lino
> >
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