[DML] Re: Warm Start Issue (David McKeen)
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[DML] Re: Warm Start Issue (David McKeen)



The RPM relay will run the pump even if your engine is turning over 
very slowly.  If it didn't you could not start the car with a weak 
battery after you lost all rest pressure (overnight).



> The problem is that the pump is not energized until the 
engine
> is turning a certain number of RPM's. I don't know the exact number,
> but it's more than the starter motor alone can yield. That's where 
hot
> start problems come from. The cold start injector is electrically
> operated, so it can spray before the system is up to primary 
pressure.
> But the cold start injector does not spray into an already warmed up
> engine,
> 
> Bill Robertson
> #5939


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