Stumble when cold

[Tony Hoffman]

Stacy,
 
Sounds like you are running lean when cold. That's what causes the backfiring. The warm-up regulator is the usual suspect, and anyone familliar with the CIS Audi's can run pressure checks to make sure that is the problem. 
 
Tony Hoffman

Stacy <qturbo at tiedyed.us> wrote:
Hi all.



Lately I my 86 5kcsq has had a stumble when cold. It starts fine and idles
fine. But any application of power, and it will stumble for a few seconds
and then smooth out. This only happens when my engine is less the 75% warmed
up. 



Sometimes the stumble will be serious enough to cause a backfire. The
problem goes away once the engine is warmed up. Any suggestions would be
much appreciated, any extra information that would be helpful in diagnosing
this I would be more then happy to provide.



Thanks in advance!



Stacy



_______________________________________________
quattro mailing list
quattro at audifans.com
http://www.audifans.com/mailman/listinfo/quattro

		
---------------------------------
 Start your day with Yahoo! - make it your home page