[DML] Re: Failed Check Valve Or Primary Pressure Regulator

["content22207" <brobertson@xxxxxxxxxxxx>]

Don't know if jumping the cold start valve will get around a failed
check valve or primary pressure regulator, at least not without a VERY
extended period of cranking. Jumping the RPM relay works, however. Ran
into an owner at SEDOC '03 with a bad primary pressure regulator. Had
been starting the engine with an ongoing stream of starter fluid for
several minutes until fuel pressure built up. Jumping the RPM relay
for a minute or two before cranking accomplished the same thing.

BTW: Don't leave the RPM relay jumped after driving. The line in isn't
switched. Fuel pump will continue to spin until the battery is dead.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote:
> The classic "Hot Start" problem is not from leaving the car in the hot
> sun. The symptoms are that that when trying to restart a Delorean
> right after shutting it down or within around an hour once it is
> warmed up(depending on the temperature) it does not start easily or
> you have to do the plug swap thing. Normally this is very irittaing
> like when you run to the dougnut shop (or gas station), shut the car
> off, and then get back in the car within say 5-10 min and it just
> cranks and won't start. It may eventually catch before killing the
> battery but more often then not the battery dies before you can get it
> started unless you swap the plug from the CPR onto the cold start
> valve just long enough to get the motor started. This can also be
> caused by a bad check valve on the fuel pump or a leaky primary
> pressure regulator but is most often due to the accumulator. On some
> cars to avoid having to get the cover open and switch the plugs a P.O.
> wires a switch into the cold start valve so he can do it from the
> driver's seat. Basically all that needs to be done is to bypass the
> thermo time switch which shuts the cold start valve down when it gets
> hot. Doing it this way you can't overdo it, it will only function
> during cranking (hot OR cold).
> David Teitelbaum
> vin 10757
> 







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