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2005 GMC Envoy tune up sorta

Tiny
ROGERLHOWE
  • MEMBER
  • 2005 GMC ENVOY
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 151,000 MILES
I replaced 4 easy to get to spark plugs. Started up great. Changed last 2 under firewall and when I went to start it I have to pump the gas pedal 6 times to start and it quickly dies. Any suggestions because I am confused. If problem is in coils does it need more gas to start? I am thinking fuel filter?

Please give me a possible direction

Roger
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Saturday, August 16th, 2014 AT 4:10 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Let me clear one thing up for you. Pumping the gas pedal on a fuel injected car does nothing but exercise your foot.

The first thing you need to do is test the fuel pressure using an accurate gauge.
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Saturday, August 16th, 2014 AT 6:27 AM

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