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No spark or fuel

Tiny
KEVINSTREMLER
  • MEMBER
  • 1993 GMC SIERRA
  • 5.0L
  • V8
  • 4WD
  • 50,000 MILES
The fuel pump went out, so I changed that. The new pump is working and I am getting fuel up to the throttle body, but no fuel is spraying from the injectors. Tried putting fuel into the carburetor but it still wouldn't fire. Pulled one of the plug wires and did the screwdriver test. I am not getting any spark either. Are these two issues related. How can I fix them?Thank you
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Friday, June 28th, 2019 AT 7:19 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Hello,

it sounds like you need a rebuilt distributor with new ignition module and pick up, if there is no spark the computer wont turn the fuel pump on. Here is how to change it out. Check out the diagrams (below). Please let us know what happens.
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Saturday, June 29th, 2019 AT 7:35 PM

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