Question about 1989 GMC C2500

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Injectors are not putting fuel into the TBI and eng wont start

Have replaced the pump relay and checked all fuses could find none bad engine turns over but injectors are not putting fuel into the TBI and the engine will not start will start if fuel is poured direct into carb and runs until depleted have also replaced the manifold actual pressure sensor still to no avail can you suggest a possible solution thank you

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  • kylesw2 Dec 01, 2008

    Have the same problem I am suspicous its the fuel pump.

    Whats the best way / Safest way to check for fuel pressure?

  • Chris S. Mar 09, 2013

    You can rent a Fuel pressure gauge kit from your local auto parts store. Have you replaced the Fuel filter? If the pump was bad theres a good chance the fuel filter if clogged. If its been replaced or you do replace it and have the same problem i would suggest checking power at the injectors and making sure they aren't the problem.

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  • 94 Answers

Two things can cause that # 1 is the module in the distrubtor # 2 is the ECM.

Posted on Nov 30, 2008

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