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1990 GMC Sierra Truck won't start

Tiny
SMASON55
  • MEMBER
  • 1990 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 290,000 MILES
I cannot get my truck start. There is battery power, the starter turns over, but it does not kick in. Have drained and recharged the battery twice with no luck. It sat for 2 yrs without moving, I charged the battery and it started fine. After the 4th restart it just will now not go
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Wednesday, June 23rd, 2010 AT 12:15 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Find out what's going on by doing below

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, cap and rotor, 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, June 23rd, 2010 AT 4:33 PM

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