Turns over but not crank

1990 CHEVROLET 2500
20,000 MILES • 5.7L • V8 • 4WD • MANUAL
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PACHYAUTO63
Put a new distributor, fuel pump, injectors, its getting fuel to carburetor and there is blue fire going from coil to distributor, but yellow fire going to spark plug. It will turn over but not crank. what should I check or fix the problem?
Feb 7, 2019 at 6:12 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good evening,

Did you check the actual fuel pressure?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Also, I would check the compression as well.

https://www.2carpros.com/articles/how-to-test-engine-compression

It could be a failed fuel pump from low pressure or low compression from a failed timing chain.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Roy
Feb 7, 2019 at 6:56 PM
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