Hot start issue

Derek Pulvino dbpulvino at
Thu Dec 19 11:55:16 EST 2002

Maybe I should start paying a little more attention to my homework.  To more
scientifically approach the problem, I was trying to think how I could get
at a fuel pressure meter, but haven't arrived at a solution yet.  Blau's
solution of cracking the union at the filter, seems, hmm inexact.  I think
it'd work in really dire situations.  From what I've heard as well, this was
more of an issue on the CIS vehicles.

>At 5:05 PM -0800 12/18/02, Derek Pulvino wrote:
>>   I was
>>wondering though why a fuel-system pressure drop wouldn't effect the
>>starting after longer periods of time.

My theory is that after longer times (overnight)
>the engine cools enough for the ECU to decide to use a "cold start"
>program, which employs a longer duty cycle for the injectors. Faster fuel
>delivery-->faster start.

Although I'm not equiped to run the numbers, in as much as lowered fuel
pressure would effect system output, all the duty cycle in the world
wouldn't seem capable of making up for drastically depleted fuel pressure.
I'm sure somebody else already thought of, and aired this though on the day
I was skipping school.


Is there anybody in the Seattle area that has access to a fuel pressure
meter?  Also, how would I tell if I had the old or new fuel pump short of
removing the sob?  I have heard a gurgling sound from the fuel tank area for
a long time now, but I really still subcribe to the BB reductionist school
of thought.  I mean hell, I'm going to resolder all, I mean half, of my
stinking speaker boards!

I'll keep y'all posted on results all the way around.

Derek P

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