[s-cars] Stumbling under acceleration.....probable boost leak?
jim at almgt.com
Mon Nov 23 19:14:57 PST 2009
Thanks for the idea.....didn't notice any oil in the spark plug wells when I
checked the torques though.....
----- Original Message -----
From: "Mike Fitton" <rfitton at vt.edu>
To: "Jim Fleischer" <jim at almgt.com>
Cc: <s-car-list at audifans.com>
Sent: Monday, November 23, 2009 7:04 PM
Subject: Re: [s-cars] Stumbling under acceleration.....probable boost leak?
> Sounds like symptoms I had when my valve cover gasket started to go. Pull
> some coils and check for oil in the plug wells.
> Jim Fleischer wrote:
>> Hey guys,
>> Just returned from a 900 mile mostly highway trip from Texas to
>> Colorado....Noticed shortly after heading out that there was some
>> significant, albeit inconsistent stumbling upon acceleration. Could
>> half-throttle it and keep it from happening in the lower gears, but
>> fourth and fifth suffered under harder acceleration at lower revs.
>> Checked all the obvious places for a tear, and tightened up all hose
>> clamps I could get to easlily.....no difference. Car still pulls pretty
>> well at upper RPMs, but not smoothly by any means.
>> Was able to replicate this with more regularity as the trip went on, and
>> seems to have gotten worse as the altitude increased. Was downright
>> difficult at 10,200ft in Leadville, CO. Disconnected battery overnight
>> to reset ecu, etc. and found no difference today.
>> My thought is a boost leak, but cannot see/find a tear, and revving the
>> motor in place does not put enough load on to make anything readily
>> apparent. Before I start tearing off hoses, etc. anything else I could
>> be missing?
>> Car is a 95 s6 avant and just turned 80K miles this trip. Hoses, POS,
>> etc. all original. Replaced spark plugs and wires @ 60K. Checked spark
>> plug torque, all good.
>> Any and all help appreciated! Do not want to take this in to anyone if I
>> can help it.
>> Best regards,
>> Jim Fleischer
>> '95 s6 avant
>> '83 ur
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