Hot start issue

DAK dak at
Thu Dec 19 13:07:22 EST 2002

I'll just add that I had a hot start issue on my '87 5KTQ and the theory
was the check valve not holding fuel system pressure. Sure enough, once
the fuel pump (w/ check valve) was replace, it went away.


On 12/19/2002 10:10 AM, John A. Mallick wrote:

> 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.
> John M.
> 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
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