[DML] Re: Discovered the root cause of my starting problem (I think)
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[DML] Re: Discovered the root cause of my starting problem (I think)



Yes, the engine does run for a second or two on the cold start fuel 
however it dies right after it uses this fuel up becuase there is 
not enough pressure to allow the injectors to fire. For some reason 
the fuel pump is not preassurizing the fuel system soon enough, If I 
jump the pump there is about 10-20 seconds of time before the system 
is "pressurized". This must not be normal. 

Nathan
--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@...> 
wrote:
>
> Not so fast VR. When cold the car starts on the cold start valve. 
It
> opens on a lot less pressure than the fuel injectors so it is 
working
> before the fuel injectors to get the motor started. That gives the
> pump a chance to get the pressure up enough to make the fuel 
injectors
> work. If you are having trouble starting the car (when cold)
> troubleshoot the cold start system. The fuel accumulator is 
supposed
> to hold up "Rest Pressure" so the car will start easily when warm. 
It
> gives the fuel pump a "head start" to getting the pressure up 
enough
> to run the fuel injectors. The motor doesn't need the Rest Pressure
> when cold, the cold start valve can work at much lower pressures. 
Go
> back and see if the cold start system is working. Try pulling out 
the
> cold start valve, stick it in a can, and crank the engine when 
cold.
> You should see it squirt. You can do a lot of troubleshooting 
WITHOUT
> the pressure gauge set-up. Where do you start you ask? My advice 
is to
> always start in the fuel tank. Clean it out and inspect all the 
parts
> inside. Then, since you have decided the fuel accumulator is bad,
> replace it. Now you can start troubleshooting the fuel system.
> David Teitelbaum
> vin 10757
> 
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "valleyrat12" <valleyrat12@> wrote:
> >
> > OK, today I decided to check the condition of my fuel injectors 
> > because I just realized that I had not ruled them out as the 
problem. 
> > Once I had gotten all six of them out I jumped the fuel pump ad 
went 
> > back to test them out. When I depressed the air meter nothing 
> > happened! One injector was spitting out a little but that was it!
>








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