Re: Cold Start valve commonly bad?

[jjwjr@ix.netcom.com (JEREMY J. WALTERS JR.)]

I think I know what is happening, Graydon.  I had the same problem with 
my 86 5KCST, and it turned out to be nothing to do with the cold start 
valve.  I had all the same symptoms-fuel smell, etc.  Turned out to be 
#2 injector dripping upon shutdown, thus relieving all residual 
pressure in the system.  When cranking, it takes a while to build up 
sufficient system pressure.  Audi issued a TSB on this some time ago, 
advising to replace all injectors with the latest version with viton 
seals (035 133 551F).  I found by pulling all injectors, leaving them 
attached to fuel lines, and running pump to pressurize system, then 
shutting off pump, I was able to see one which injecor dripped.  It was 
very obvious, as the tip remained in the plastic shroud when I pulled 
the #2 injector.  Replaced with new version from GPR-starts like car is 
brand new!

Jeremy Walters
San Ramon, CA