Re: 87 5KTQ long crankin time question

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

You wrote: 
>
>My 87 5KTQ is hard to start in the mornings when cold and after a hot
>soak of about 30 min. or lolnger.  It just takes excessively long
>cranking time to get it started.  
>
>This weekend I took all 5 injector out and ran the fuel pump to check
>for leaks and one (number 5 cyc) would seep a small amount that was
>barely noticable except for a small amout around the center of the
>injector nozzle, with no dripping.
>
>Everything else in the fuel system seemed O.K. although one injector
>did have a bad spray pattern at very low pressure.  The air flow
>sensor diaphram (not sure if that is the official name for it) moved
>smoothly and didn't seem to bind in any way, was centered in the
>venturi. All vacuum hoses are intact etc.
>
>When I started the car up this morning it started right away like it
>is supposed to but after a 1 hour sit at work it went back to its
>long cranking time again.
>
>Could this one seeping (leaking with no drip) injector cause this?
>
>What else could I check? I understand there is a fuel pump relief
>valve? that can let fuel pressure bleed off. How can I check this?
>TIA
>
>
Russ-

You have the same problem I had with my 86 several months ago.  It IS 
that slightly seeping injector, which does not allow for residual 
pressure to remain in the system, hene the long cranking time.


Jeremy Walters