Question about 1999 Ford Explorer

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Have to turn ign. on&off 3 times to prime it to start.

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  • Chuck Martin
    Chuck Martin May 11, 2010

    You have a leak down in fuel system which could be a leaking injector,fuel pressure regulator,fuel pump check valve. Do you have a way to check fuel pressure and block off fuel line?



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You have pressure bleedng off due to a bad check valve in the fuel pump or a bad pressure regulator (on the fuel rail) letting pressure bleed off.

When you turn the key on & off, it starts the fuel pump for 2 seconds each time. The pump turns off after 2 seconds unless the engine is running. The pump runs all the time during crank mode.
But you need 40 psi when you start cranking so the injectors can spray fuel into the cylinders.
please rate as fixya if this identifies your issue. Good luck.

Posted on Mar 11, 2009


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