1987 Other GMC Models

1987 GMC
100,000 MILES • V8 • 4WD • AUTOMATIC
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KSTRAUB
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  • 1 POST
87 4x4 suburban won't start has spark, fuel pressure, injectors have been cleaned, truck will start if fuel is poured down the TBI and then dies. Pulled injector plugs to check voltage both plugs pulse from 0 to .02 volts. Checked all fuses all seem to be good. What am I missing?
Oct 16, 2008 at 10:49 PM
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2CARPRO JACK
  • ✓ASE Certified Mechanic
  • 11,533 POSTS
  • ASE Certified Mechanic
Those injectors should be getting 12 volts from the ECM-1 fuse. If not, there is a possiblility that the ignition switch isnt feeding the fuse. Need to get a test light and see if there is power on either side of the fuse
Oct 16, 2008 at 11:37 PM
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