[DML] Re: Hot start problem
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[DML] Re: Hot start problem

After 3 hours it is no longer the accumulator. It doesn't hold the
"REst Pressure" up that long. I would suspect the thermo-time switch
and the entire cold start system. Again to confirm a "hot start"
problem you switch the plugs, not jumper the RPM relay. The only
reason to jumper the RPM relay is if there is no pressure at all and
the fuel pump dosen't run. I would suspect the inertia switch before
the RPM relay anyway. BTW if switching the plugs won't get you going
on a cold engine that is a good indication of a problem in the cold
start system which would not include the thermo-time switch. If it
gets you going on a hot engine then at least you know the cold start
valve is OK. Another way to confirm a problem in the cold start system
is to give it a squirt of Ether when cold. If it starts right up the
cold start system is not functioning properly.
David Teitelbaum
vin 10757

-- In dmcnews@xxxxxxxxxxxxxxx, doctorDHD@... wrote:
> I guess I should have given more details ...
> Last Friday I was at a cruise night here in Long Island and when I
went to  
> start the car after it was off for about 3 hours, it cranked well
and seemed to 
>  catch for a spit second then just cranked and cranked.
> I jumpered the RPM relay and still nothing, just cranked and cranked.
> So I thought it might be an ignition problem.  I took out my spark 
> tester, basically a neon bulb in series with a spark plug wire, and
 inserted it 
> into the top of the ignition coil.  I then asked someone to  "try to
start the 
> car while I would watch the tester" 
> Well the car started right up in a split second like there was no
problem  at 
> all.
> Hence my original question as to how long you need to jumper the RPM
> for before you will build up enough pressure / purge the lines...
> What exactly is happening with the hot start problem.  Is it just low  
> pressure that needs to build up, which should build up in a second
or two, or is  it 
> some vaporization  phenomena like vapor lock in which you need to pump  
> enough gas in to purge the lines, which may take longer...
> Dave Delman
> D² & 06530 and 2700 ohms
> ************************************** See what's free at
> [Non-text portions of this message have been removed]

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