Question about 1998 Chevrolet C3500

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Trouble starting after warm have to turn over forever

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This could very possible be a bad coil , or a bad fuel injector, check the coil to see if you see any cracks in it , in which it would be jumping fire, or it could be a bad fuel injector, you can check each fuel injector, by taking a mechanics stethoscope, and putting the probe to each injector 1 at a time, and have someone crank the engine over to see if you hear a clicking sound coming from the injectors, the one that has the weakest sound or no sound is the bad one . also, you can disconnect each injector wiring connector, 1 at a time, and hook up a noid light to each injector wiring connection, and then turn on the ignition key, but do not start the vehichle, this will show you if there is current coming from the wiring connection to the injector, you can purchase the noid lights at a auto part store. hope that this information has been helpful to you.

Posted on Apr 03, 2011

  • Peter Schroebel Jun 25, 2013

    It is a bad fuel pressure regulators that leaks down when warm

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