1989 GMC S15 Ignition timing

1989 GMC S15
28,300 MILES • 4 CYL • 2WD • MANUAL
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TMBOWEN
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  • 2 POSTS
I need to know what the ignition timing is on this model. Have exhausted every other possible problem, sensors, ecm, exhaust, but the Clymers manual isn't helping. Please help. I have a timing light.
Jun 4, 2009 at 2:52 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
Is this a 2.5L or 2.8L engine?
Jun 5, 2009 at 12:42 AM
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TMBOWEN
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  • 2 POSTS
Ooops, 2.5. Found the timing degree, but not running any better. Last thing to try is changing the ignition module, then on to the shop. or get a new vehicle.
Jun 5, 2009 at 9:14 AM
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