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1999 GMC Sierra Will not start

Tiny
BOYDJ
  • MEMBER
  • 1999 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 136,000 MILES
The motor will turn over but, will not start. I hav e replaced the fuel pump. The engine has fire. What else can I check?
Wednesday, June 30th, 2010 AT 6:03 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If you can hear the fuel pump come On for 2secs-do below

Verify the fuel pressure if its within specs if okay -check if the injectors are pulsing-let me know
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Wednesday, June 30th, 2010 AT 7:13 PM
Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
I'd have to use a gage and check fuel pressure. What is litre size of engine?


https://www.2carpros.com/forum/automotive_pictures/512072_sierra_fuel_pressure_1.jpg

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Wednesday, June 30th, 2010 AT 7:19 PM

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