Question about 1993 GMC G2500

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I have a 1993 gmc 2500 van with a 4.3 v 6 engine stalls will not start. get no fuel at throttle body inj. if I add fuel to throttle body van will start and run as long as I give it gas . when allowed to idle engine stalls and will not restart unless fuel is added again. I installed new fuel pump and pressure reg, it was no help

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  • gatorman519 Sep 14, 2010

    had a couple answers but there are no leaks and the filter is new.

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You must have a leak or one of the lines are clogged. The reason it stays running when your on the gas is because it keeps the fuel pressure up. Then when it shuts off it loses all pressure in the line and the pump cant handle the initial start with the leak in the line.

Posted on Sep 14, 2010

  • Matt Sep 14, 2010

    Check the regulator you put on, make sure the directional flow of fuel is right. Do the same with the filter. Make sure all fuel flow is right. If thats not the issue, Did you hook the lines up to the pump correctly?

  • Matt Sep 14, 2010

    Check the regulator you put on, make sure the directional flow of fuel is right. Do the same with the filter. Make sure all fuel flow is right. If thats not the issue, Did you hook the lines up to the pump correctly?

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Sounds like u have a clogged fuel filter or a leaking line the filter should be right outside the tank try this has to be no other option

Posted on Sep 14, 2010

  • Daniel Berry Sep 14, 2010

    i say a kinked line maybe eithor that or clogged fuel filter if new pump thats only possibilties unless the line is clogged put injector cleanor in the tank

  • Daniel Berry Sep 14, 2010

    what about a fuel shut off solenoid or a fuel tank falve sensor trying think ideas

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you could google that or you tube it or read the FSM.

hide call keys from step 2 on, or very bad things can happen.
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ill just cover the (basics)
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!

next tje FSM words (just the OFF section)

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  13. Remove fuel rail (with injectors attached) from engine.
end expert.

alldata.com
login and read all steps. that be best , then ask questions?

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