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Not getting fuel out of the injector

Tiny
602MIKE1
  • MEMBER
  • 1994 GMC SUBURBAN
  • 200,000 MILES
I am working on a 1994 gmc suburban with a throttle body injection system. I am not getting fuel out of the injector?

Tried fuel pump, fuel filter, both injectors, confirmed power to injectors.
Monday, December 26th, 2011 AT 2:48 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Check the pick up coil in the distributor. It should ohm out at 800-1600 ohms. There should be ac voltage cranking. The computer sees this signal to fire the injectors below 200 rpm.

Roy
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Monday, December 26th, 2011 AT 2:54 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have you check for an ignition spark
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Monday, December 26th, 2011 AT 2:55 AM
Tiny
602MIKE1
  • MEMBER
  • 2 POSTS
I do have resistance on the pick up coil. I do have ignition spark. The truck will run if fuel is "hand delivered" down the carburator. Anything else?
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Monday, December 26th, 2011 AT 3:15 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You sure its a carbuerated engine?
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Monday, December 26th, 2011 AT 7:20 AM

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