Mechanics

WON'T START, BUT TURNS OVER

1984 GMC Truck

Engine Mechanical problem
1984 GMC Truck V8 Four Wheel Drive Automatic 66000 miles

Was driving down the road and the truck died. Truck backfired. Now, after turning the ignition, it will turn over but not start. It is getting fuel though. At a loss. Need your help!
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Mylow910
February 22, 2010.




Do below to determine whether it's fuel or spark related problem: Cranks but no start condition: Fuel and Spark: Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 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, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

Tiny
Rasmataz
Feb 22, 2010.


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