[Vwdiesel] RE: vwdiesel digest, Vol 1 #77 - 1 msg
LBaird119 at aol.com
LBaird119 at aol.com
Wed Apr 3 02:17:02 EST 2002
In a message dated 4/2/2002 12:52:58 PM Pacific Standard Time,
kysard55 at suscom.net writes:
> I did replace the oil pump, this didn't help, is the pressure relief valve
in
> the oil pump.
Yes, the relief is in the pickup/lid portion of the oil pump.
> The only thing I have done that helped is replacing the vacuum pump. I did
> notice
> a little play in the intermediate shaft. If it was that bearing possibly
> that caused
> my vacuum pump receiver to wear? Still doesn't explain the good oil
> pressure when cold?
On these engines, good, cold oil pressure is about double of what you're
seeing. I had a 100 PSI gauge on my Rabbit. With over 100,000 on all
the bearings, it still slammed the gauge when cold and backed off to
80 - 100 psi when hot and at an idle.
If replacing the vacuum pump helped the pressure then I would be
suspicious of the intermediate bearings. A new/different vacuum
pump would put a different load on the int. bearings which could
cause a change in pressure, if it was leaking out past those bearings. :(
This seems to be becoming a fairly commonly overlooked part on
overhauls. :(
Loren
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