Question about 1990 Ford F350

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The fuel is bleeding back to the tank. makeing it hard to start in the morning.

When my truck sits for a period of time it seems that the fuel is draining back to the tank. i have to crank on it for a while (25-50 seconds) before it will start. what is the likely culprit? i cant find any leaks (hoses, connectors, injectors, or the pump) everything is dry.

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  • phil51 Dec 14, 2008

    Fuel drains back and will only start with ether. Where are check valves located. Are they in the input or output lines at fuel filter?

  • estergard Jan 13, 2009

    truck sits for 30min or more it will take a long time to crank over before starting.



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Sounds like the check valve in the fuel pump is not closing causing fuel to drain back.

Posted on Sep 09, 2008


If fuel injected you might check the fuel filter and pump pressure.

If carberueted you might check to see if the float and needle valve are sealing properly.

Posted on Sep 10, 2008


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