1996 Chevy Blazer no fire no fuel

Tiny
FAITHNJOHNNY
  • MEMBER
  • 1996 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 247,000 MILES
Okay 1996 chevy blazer 4.3 4wd has no fire no fuel. We can use the bypass and fuel pump works but no fire still. Drove it saturday parked sunday battery was dead replaced it and no fuel or fire what would cause this? We did check everything with voltage testers and test lights we have power at the fuses. We used a fuel pressure gauge and just cranking the engine no pressure but when we hook up the bypass we do have pressure.
Tuesday, May 18th, 2010 AT 10:07 PM

1 Reply

Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
You used a fuel pressure gage, engine cranking, and no fuel pressure? My hearing is no good, I can't hear the pump run, engine cranking. There are two power supplies to the fuel pump, if one fails, you have the other. Both get primary voltage from the ecm bat fuse. Use a voltage tester on the fuse circuit, should be hot all the time.
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Tuesday, May 18th, 2010 AT 10:33 PM

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