[urq] Hot Start Problems Continued...

[Robert Rossato]

Which car is this on, UrQ or 5kq?  My first bet is the check valve at the fuel pump.


 -------------- Original message ----------------------
From: "Pasqualoni, James E" <james.pasqualoni at gs.com>
> The Symptoms:
> When cold, car starts immediately upon cranking.  Runs great with no issues.
> Idle is strong and steady at 850 rpm.
> 
> Hot Starts:
> When attempting a hot start, after the car has been sitting for a few
> minutes, it immediately catches, stumbles, then stalls.  Car will continue
> cranking with good spark, but there appears to be some vapor lock or
> flooding-not sure.  No strong smell of gas at all.
> 
> What's Been Done:
> -New 85 deg C injector cooling fan thermo switch.  Injector cooling fan
> works fine
> -New vacuum thermo switch (the one on the block near the ig distributor
> -Checked for vacuum leaks-none found
> 
> What should I pursue next?  I was leaning towards fuel pump check valve,
> then injectors.  Does this make sense?  I don't believe that there are any
> vacuum leaks, however, I will keep checking this as well.
> 
> Thoughts, suggestions, please?
> 
> TIA,
> Jim