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1989 GMC Sierra

Tiny
LEWIS1072
  • MEMBER
  • 1989 GMC SIERRA
Electrical problem
1989 GMC Sierra 6 cyl Two Wheel Drive Manual

My truck ran fine. Whent to give my buddy a boost. Dead battery. Tried jumping my buddies rig with cables. No luck. Took my battery out of truck. Put it in his car. When done. I put my battery back in truck. Wont start. Cranks and cranks but does not start.
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Wednesday, April 28th, 2010 AT 1:14 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 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
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Wednesday, April 28th, 2010 AT 1:48 PM

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