Hot start issue
John A. Mallick
john_mallick at iat.utexas.edu
Thu Dec 19 09:10:21 EST 2002
It happened while I still lived in upstate NY about a year or so ago. If the car
sat for about 1/2 hr or so it would be a real bear to re-start. Stone cold it
started great. I think Phil's theory is a good one. Art Mayhew at Salisbury
Motorcar thought it might be the fuel pressure regulator, but that tested fine.
The check valve was shot; Art said that you could just blow right through it. No
problems since replacement.
Phil Rose wrote:
> 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. The local shop thought it was due to
> >the increased temp under the engine bay which would then allow more of a
> >chance of gas vaporizing and locking up the lines. I wonder what's
> >consensus on this?
> >Derek P
> This same hot-start problem was discussed at length in several posts
> just 3 months ago. 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.
> Phil Rose
> Rochester, NY
> mailto:pjrose at frontiernet.net
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