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1989 Chevy Silverado injectors not fireing

Tiny
XRMOTO_X
  • MEMBER
  • 1989 CHEVROLET SILVERADO
  • V8
  • 4WD
  • MANUAL
K so my truck started backfireing. So I replaced the air cleaner and cleaned the inside of the dist cap ( lots of buildup )the truck fired but stopped suppling fuel, so I replaced the fuel pump, filter, fuel relay. Still nothing so then I found out the dist. Was broke so I replaced the whole dist and its still not starting im getting fuel all the way to the throttle body but my injectors still wont fire and im getting power to all four wires on the injectors. Any ideas.
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Tuesday, January 25th, 2011 AT 6:31 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hook up a noid lite on the injector harness and see if it'll flash by cranking the engine over also -Do you have spark?
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Thursday, September 3rd, 2020 AT 9:58 AM
Tiny
XRMOTO_X
  • MEMBER
  • 3 POSTS
Yes I have spark. I have everything I should need just no fuel through the injectors.
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Thursday, September 3rd, 2020 AT 9:58 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check injectors fuse if okay and if there's power to one side of the injector harness-check the computer's injector ground driver circuit-
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Thursday, September 3rd, 2020 AT 9:58 AM
Tiny
XRMOTO_X
  • MEMBER
  • 3 POSTS
How do I check the computers injector ground driver circuit
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Thursday, September 3rd, 2020 AT 9:58 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the injector ground wire back to the computer if okay get it repaired/replace-
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Thursday, September 3rd, 2020 AT 9:58 AM

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