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Re: Pete's 4kQ turbo woes


    Have you verified the cam timing? Sounds like it may be off a little.

Fred Munro
'91 200q  260k km

-----Original Message-----
From: Orin Eman <orin@WOLFENET.com>
To: Quattro List <quattro@coimbra.ans.net>
Cc: Pete Kunzler <pck@gte.net>; PAT MARTIN <MARDKINS@classic.msn.com>
Date: Tuesday, October 06, 1998 4:52 PM
Subject: Pete's 4kQ turbo woes

>After fixing the broken valve, we are trying to get Pete Kunzler's
>car running again.  It is extremely difficult to start...
>Before the teardown, compression was good apart from the cylinder with
>the broken valve.  Now compression is bad - 75 to 110.
>What could have happened?  Current theory is something to do with the
>lifters, but what?  There isn't any clicking.
>Engine is timed correctly.  When it runs, the timing light shows
>a few degrees of advance at idle - which is correct.
>Fool pressure is OK, if a little low at 80psi.  Air meter plate
>Mixture leans over time (as observed by frequency valve duty cycle
>readings increasing).
>On one occasion, we got two _loud_ backfires and the engine quit.
>We have a very occasional 2111 error - swapped RPM and timing
>sensors - no difference.
>On starting, it acts like sometimes there is compression, sometimes
>there isn't...
>Phil, what was that oil pressure problem you saw?
>Any ideas?