1996 GMC Jimmy will not start

1996 GMC JIMMY
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DOUGHOLLYWOOD
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1996 GMC Jimmy 6 cyl Four Wheel Drive

The truck will turn over but will not start.Every once in a while it will start and runs great when it does but the problem is getting worse.I replaced the fuel filter and fuel relay switch in the glove compartment.Still nothing.Is there a fuel cut of switch?
Feb 21, 2010 at 2:11 PM
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RASMATAZ
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The truck will turn over but will not start-Next time it refuses to start-Do below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor /distributor pick-up coil, ignition control module, ECM,Ignitor camshaft and crankshaft sensors and computer. Note: If it doesn't apply disregard it
Feb 21, 2010 at 3:59 PM
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