Starting issue?

2006 CHEVROLET EXPRESS
250,000 MILES
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GORLANDO
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  • 2 POSTS
50% of the time it starts on the first try 50% of the time it starts on the second try fuel pump replaced cam sensor replaced.
Apr 13, 2023 at 11:49 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

Does this happen regardless of engine temperature, or does it seem to only happen when it's cold? Also, you indicated replacing the fuel pump. Have you confirmed fuel pressure is within the manufacturer's specifications?

Also, when it starts, do you ever notice any odd odors or smoke from the exhaust?

Let me know.

Joe
Apr 14, 2023 at 8:19 PM
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GORLANDO
  • MEMBER
  • 2 POSTS
Randomly. Pressure good. Did not notice anything from exhaust. But there's a little pop when it doesn't start.
Apr 15, 2023 at 3:49 AM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

This is a tough one to call at this point. Since it does start on the second try, I'm not sure what to specifically focus on. Is there ever a time that it takes an extended amount of time to start? Also, does this only happen on cold starts? Let me know where you hear the pop. Does it sound like a backfire, and does it seem to come from the engine area or the exhaust?

Let me know.

Joe
Apr 15, 2023 at 8:41 PM