1997 GMC Sierra Not starting

Tiny
SSCHARTERS
  • MEMBER
  • 1997 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 167,000 MILES
Great running truck, will not start. Replaced fuel pump 10,000 miles ago, 63 psi on fuel rail. Has spark, aslo tested ignition module and coil checked fine. 140psi compression on #1, changed spark plugs all were damp with fuel. What should I try next?
Wednesday, January 27th, 2010 AT 1:23 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First, so you dont pour too much more gas down the cylinders, remove the fuel pump relay, change the oil and filter, then use either a noid light for your injectors, or a DVOM and see if there is power to ALL injectors while cranking the engine. Noids are cheap and can be found at all parts stores. Pressure in the rail is good, but if the injectors dont fire, no start results.
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Wednesday, January 27th, 2010 AT 6:11 PM

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