Re: Slow Starting Problem (87 5KCSTQ)

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

You wrote: 
>
>i'm back to lurking on the list after a 6 month forced break
>        (no college = no free internet access)
>
>i've had a nagging slow start problem with my 5000 since day one.  
here's
>the lowdown:
>
>slow start warm or cold ( ~10 seconds) unless just shut off and 
restarted
>(within 5 minutes) or super super cold (-15 or so)
>
>the engine is an MC turbo
>
>i replaced the valve on top of the fuel pump that prevents back flow - 
no
>change
>
>i did a fuel system preesure check, everything to specs.
>
>i switched the temp sensers around to see if one was bad - no change
>
>i pulled the cold start valve and did the check from the manual to see 
if
>the computer (in diagnostic mode) could fire it.  it works perfect.
>
>checked the wiring from the temp sensor to the computer plug in - 
good.
>
>let the car sit, pulled the fuel pump relay and jumped the terminals 
and
>let the fuel pump run for ~30 seconds and then tried to start it.  no
>difference, slow start.
>
>the cold start valve does not seem to be firing when the engine is 
turned
>over.  i beleive it should pulse a little regardless of the temp with 
more
>pulses the colder it is.
>
>any ideas anyone ??? TIA
>
>tom
>
>dalton@discover-net.net
>87' 5KCSTQ
>
Tom-

Be sure to check the residual pressure.  Remove all injectors, 
pressurize fuel syste, and watch each for ANY dripping.  Had this 
problem on mine.  There was a TSB on this subject, instructing to 
replace ALL injectors with new, viton sealed units.  It turned out I 
was able to get away with replacing just one.

Good luck!

Jeremy Walters
San Ramon, CA