[V6-12v] Strange new exhaust smell

[Jon Spensko]

Craig,
My 92 100S has had the same problem a couple of times.  The big stink always
occurred right after hard acceleration or as I coasted from high speeds to a
stop.  Also noted was the rapid "blapp" in the tail pipe as I slowed from
high speed.  Oh how I miss that sound from my old 57 Chev Pipes!  You might
also want to clean your MAP sensor too!?  I also replaced the O2 sensors and
the smell/sound went away.

Recent Post suggest to clean the EGR to help with oil consumption, I will
try that soon as I have 1QT per 1,000 mile oil usage too, a common V6-12V
issue.

Hope this helps!
Jon Spensko
92 100S (225k)
88 5000CSQT Avant (139k)

----- Original Message -----
From: "Craig D. Niederst" <niederst at dashfast.com>
To: <v6-12v at audifans.com>
Cc: "Quattro List" <quattro at audifans.com>
Sent: Tuesday, January 06, 2004 9:07 PM
Subject: [V6-12v] Strange new exhaust smell


For about the past month, I have had a strange exhaust smell from my '92
100S. It smells like burnt coffee beans (not exactly the odor, but that's as
close as I can describe it). I originally thought it was just some sunflower
seeds that mice had stowed in the engine bay that I attempted to blow out
and happened to get onto the exhaust or other hot engine surface. But upon
closer inspection, the smell is definitely coming from the exhaust, and not
the engine bay. I have changed the oil in that time period (from 10W30
Syntec to 10W30 Quaker State Higher Mileage) to see if it helps my oil
consumption issues (~1 qt per 500 miles), so I was wondering if it may have
something to do with it. I have used this same Quaker State oil in a Honda
Accord and Plymouth Voyager, and they do not have this odor. Any ideas?

Craig
'92 100S (108k)
'86 CGT (234k)
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