Intermittent not starting issue?

1995 CHEVROLET SILVERADO
132,434 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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RAYNEW50
  • MEMBER
  • 1 POST
It starts then quits or doesn't start at all. I changed fuel pump, oil pressure sensor, and MAP sensor. Any ideas as to what is causing this? Fuel pressure is good. no vacuum leaks.
Jul 11, 2023 at 8:22 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

When you have a crank with no start condition, either it is a fuel-related issue or ignition spark related. I realize you replaced the fuel pump, but anything is possible.

Here is what I need you to try. See if it will start if you use starting fluid. If it does and then stalls, it's fuel related. If there is no change, we need to make sure there is spark to the 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 what you find. Also, let me know if you have a scan tool and if you checked the fuel pressure after the pump was replaced.

Take care,

Joe
Jul 11, 2023 at 1:12 PM
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