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Re[2]: Help - 1986 5000cstq Suddenly Running Very Poorly




> Clogged Cat? Hmm... Seems unlikely, in that the car ran fine in the morning
> and then ran terrible upon startup in the evening. I always thought that
> Cat clogging would require some length of running time during which a
> decline in performance would occur.

It _can_ happen quickly.  E.g., if the hot side turbo oil seal lets go
and dumps fresh engine oil into the downpipe.  Rare, but worth bearing
in mind.  Personally, I'd check things like chassis grounds and fuel
pressures first.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone +44 7785 302803  Fax +44 870 0883933