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Re: quattro-digest V3 #1071
>There was a small amount
>of black smoke coming out the pipe like it was running really rich.
>We immediately thought "bad gas". But, when we turned the car off and
>then restarted it, it ran flawlessly, and has been since.
>So, is there some kind of "limp-home" mode on this car that some
>flaky connector might have engaged?
A fairly common cause of this is actually just a poor connection on the
fuel pressure regulator, or the ground wire that comes out of that
connector and attaches (usually) to the air accumulater on the intake
manifold. Try checking the connector first as I have seen more of those
that the connectionn was loose, ie. the metal inside the connector was
seperated too far.