Put in engine will turn over getting gas but will not start?

Tiny
BIGPAPA1
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
Put in engine getting gas and turning over.
Saturday, March 18th, 2023 AT 3:35 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Hi,

In most crank no-start conditions, it is either fuel or ignition spark. Here is what I need you to do.

See if the engine will start if you use starting fluid. If it does and then stalls, we know it is fuel related. I know you have fuel to the fuel rail, but if it isn't being injected into the engine, it won't start.

If there is absolutely no change with the starting fluid, I need you to check for spark at the spark plugs.

Here is a link that explains how that is done:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

Try this and let me know the results.

Take care,

Joe
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Saturday, March 18th, 2023 AT 8:11 PM

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