90 quattro injector prob/possible system contamination

Paul Heneghan paul.heneghan at bbc.co.uk
Sat Aug 19 23:05:24 EDT 2000

>Date: Fri, 18 Aug 2000 11:25:46 MDT
>From: "caramie schnell" <caramieschnell at hotmail.com>
>Subject: 90 quattro injector prob/possible system contamination

>I wrote in earlier regarding power/hesitation problems with my '89 90 
>quattro. I've taken it to a new mechanic who has diagnosed the problem as 
>clogged fuel injectors.
>How common . . .

My 1989 Audi Avant had the same symptom.  It was also accompanied by a
louder than usual buzz from the pump.  I replaced the pump and the problem
went away.  See Scott Mockry's http://www.sjmautotechnik.com/ficis.html#tank
for an excellent overview on this problem.  I don't know whether it also
applies to 90s.

Injector's don't last for ever.  They need to be cleaned on a fairly regular
basis, and will probably be replaced at least once in a typical high-milage


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