[Vwdiesel] RE: re riniging rabbit oil pressure bad

[greg rich]

Did the intermediate shaft bearings get changed? -both?)
my neighbour had a machine shop rebuild his 1.9 td and they didn't change 
them, exactly the same situation, lots of cold oil pressure, non when hot, 
he lost his turbo very soon afterwards...
It took three times for them to figure it out (re and re engine). They would 
not admit to it being there mistake. They kept saying they installed a new 
oil pump, sure it was new but no markings on it (was it meant for a turbo 
diesel?) as they are larger pumps.

I don't think your head can cause low oil pressure like that UNLESS you 
changed the camshaft and the bearings don't match-the cams are not 
interchangable without a line boring to match them.


Most machine shops that are not familar with VW never know about those two 
bearings inside there.
Check over your bills and see if they were done
Greg


Re-ringing a Rabbit --Oil pressure test bad

>This is exactly my problem with oil pressure.  I get great pressure on 
>start
>up 70 psi using 15w-40 shell, once warmed up I get 8psi at idle and 20psi 
>at
>55mph in 5th gear. This reading from the oil filter housing port. The head
>shows zero pressure after warm up. This is after a complete rebuild, new
>everything except the head. It still has the original valve seals which had
>40k on them, I'm a dumb A@@ for not changing them out. The machine shop
>decked the head to make it flat due to it being out by .004  They looked
>over the rest and said it looked good and it vacuum tested great so the
>valves were sealing. I should have just had them do a complete head work 
>and
>been done with it but I wasn't thinking. The engine has new pistons, rings,
>bearings and oil pump. So the low oil pressure is a mystery and the engine
>has 3300 miles on it now running with low oil pressure. I installed the 
>head
>and followed the Bentley to the letter. Gasket is installed correctly,
>torque bolts to specs everything. Could it be possible that the cam saddles
>are worn excessively? Just a thought.
>Don't mean to make this sound bad but it is good to see someone else out
>there with the same problem. Maybe, finally this low oil pressure issue can
>be solved.
>I have light smoke blue in color out the exhaust, but only after the engine
>is warmed up, at least it seems that way for the most part, don't notice it
>much on initial cold start up and run till warm. I do get black smoke under
>heavy acceleration, even thought this is an ECO diesel. I wonder if my cat
>is shot now?
>Nick
>
>
>
>
>-----Original Message-----
>From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
>Behalf Of Bart Wineland
>Sent: Monday, October 18, 2004 10:01 PM
>To: vwdiesel at vwfans.com
>Subject: Re: [Vwdiesel] Re-ringing a Rabbit --Oil pressure test bad
>
>I need to clean the engine off again to see where the oil is leaking from.
>When I could see the oil bubbling around the exhaust flange donut while it
>is running my first thought was it was from oil getting by the rings into
>the exhaust and thought that may explain the heavy white/gray smoke and low
>oil pressure also. But that oil could have come from when I had the valve
>cover off?? Wouldn't blow by cause a loss in low oil pressure?  It does
>tango alright. From a high of 70 psi with a cold engine (about 40 degrees
>outside) to under 10 psi after it warms up for 12 minutes. I did use old
>cut off head bolts with slots filed in them (per archives) to keep the head
>gasket aligned. It is a hydraulic head with the extra oil port so the
>gasket can't go on upside down. Torqued it according to Bentley in sequence
>I think 30# first pass, 40# second, then with just a breaker bar for the
>final pass, although Bentley calls for an additional 1/2 rev. on each bolt
>I could not get that. Maybe 1/4 rev. I was sure the headbolts were going to
>twist off. I forgot to mention that the oil pump was replaced last fall
>before all this started also, so it only has 9 or 10k miles on it and oil
>pressure was not a problem before I pulled the engine and fixed everything
>:)   Pressure at the pump sensor? You mean the sensor at the filter?
>"Don't you give up."  You guys make that pretty hard.
>
>Thanks,
>Bart
>
>
>At 08:21 PM 10/18/2004 -0400, you wrote:
> >It would seem to me that oil pressure, oil leaks and blowby are three
> >completely unrelated items.  Does your oil pressure tango?  How low does
> >it go?
> >(warmed up and idling?  Did you use cut off bolts to keep the head gasket
> >in place?
> >  How 'bout pressure at the pump sensor?  Don't you give up.
> >Andrew
> >P.S.  I once had an engine Sieze approx. six months after complete 
>rebuild.
> >Started it up backed out the driveway, first gear, went to shift into
>second,
> >stalled.  That's wierd she never stalls!  Click, click went the
> >started.  0 to
> >very bad day in 1 second.  Aparently a little piece of aluminum (not a
>diesel
> >VW) from the align bore had finally made it to the crank bearing.  (Why
> >didn't the pressure washer blow it out of the gallery?) Pinch.  I bet if 
>I
> >had been
> >under load I might/might not have felt a hiccup before it clearanced
>itself.