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

2004 CHEVROLET TRAILBLAZER
175,000 MILES • 4.2L • 6 CYL • 2WD • AUTOMATIC
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BIGPAPA1
  • MEMBER
  • 1 POST
Put in engine getting gas and turning over.
Mar 18, 2023 at 8:35 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 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
Mar 18, 2023 at 1:11 PM
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