I changed the spark plugs out in my Envoy one at.

Tiny
CORYTAYLOR2908
  • 2004 GMC ENVOY
  • 101,333 MILES

I changed the spark plugs out in my envoy one at a time because it has individual coil packs on it and I dint want to get them crossed up. After changing the plugs I tried to start my truck and it would not start. I then checked each coil pack to make sure the connection was good and tried to start again, still wouldn't start. I then put the old plugs back I to make sure the plugs that I had purchased was not a bad set of plugs and it still will not start. What will cause that to happen.

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Saturday, November 10th, 2012 AT 5:35 PM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
  • 25,533 POSTS

Look around all the area to be sure that you did not leave any connectors undone. Start there

Roy

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Saturday, November 10th, 2012 AT 5:39 PM
Tiny
CORYTAYLOR2908
  • MEMBER

Everything is connected.

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Saturday, November 10th, 2012 AT 6:01 PM
Tiny
ASEMASTER6371
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You need to verify spark and fuel pressure.

Shoot some starting fluid in the air filter to see if it starts

Roy

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Saturday, November 10th, 2012 AT 6:09 PM

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