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Re: Cold Start Problems


    A leaky check valve at the fuel pump will give these symptoms.


Fred Munro
'91 200q  280k km

----- Original Message ----- 
From: Steve Sherman <Steve.Sherman@nsc.com>
To: <quattro@audifans.com>
Sent: Thursday, September 02, 1999 11:56 AM
Subject: Cold Start Problems

> My 87 5KTQW previously had a cold start problem.  It would need to crank
> for 10 sec or so before it would catch.  Once it started it ran great,
> and it could restart no problem until it cooled off again.  I had
> planned on digging into it, when after a couple of cans of FI cleaner it
> went away this Spring. I wrote it off to a dirty fuel enrichment
> injector and forgot about it.
> Until a couple of days ago when the problem returned.  Same symptoms,
> long crank times when cold, fine after the initial start.  I'm trying FI
> cleaner again, but am also wondering if the problem going away in the
> Spring was more a result of higher Summer temps than the FI cleaner.
> Any BTDT's that listers could pass along, or suggestions for thefirst
> thing(s) to check.  My hunch is the fuel enrichment injector or possibly
> the anti-leak down valve in the fuel system.