[A8] Large Vaccum Leak-likely causes?

John Markowitz markowij at musc.edu
Wed Jul 7 15:08:04 EDT 2004

Hi All:

I have a 1998 Audi A8 Quattro with a check engine light on. My OBD tool gave me only limited info on code definitions but indicates "A large Vaccum Leak" and various other codes I don't know. Beyond a loose/leaking gas cap are there any other common causes of this? Engine seems to be running relatively normal.

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