1996 Other GMC Models not starting

Tiny
SVT28103
  • MEMBER
  • 1996 GMC
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
I have a 96 gmc catering truck. It has a 4.3 vortec v6. Its not fuel injected, its throttle body injection from the way it looks. The fuel pump kicks on, but it doesnt start.I poured a little gas down the throttle body and it starts no problem, seems like theres no fuel coming to the engine, I dont know if theres a fuel relay of some kind, I really have no idea why fuel isnt getting to the engine. If you have any ideas or advice on whats wrong, id really apreciate it.
Monday, October 4th, 2010 AT 8:17 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Your first step is to use a fuel pressure gauge and find out exactly what the pressure is. If the pressure is normal (9-13PSI), then you have to use a noid light to test for injector pulse and power supply.
Was this
answer
helpful?
Yes
No
Monday, October 4th, 2010 AT 8:34 AM

Please login or register to post a reply.

Related Engine Not Running Content

Car Cranking but Not Starting? Try This
VIDEO
Car Cranking but Not Starting? Try This
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE