1976 GMC Sierra

Tiny
STEVE09
  • MEMBER
  • 1976 GMC SIERRA
1976 GMC Sierra V8 Four Wheel Drive Manual

Just put in a new fuel pump, but it won't start. What is the problem
Monday, March 9th, 2009 AT 5:57 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
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Monday, March 9th, 2009 AT 6:01 PM

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