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Turns over but not crank

Tiny
PACHYAUTO63
  • MEMBER
  • 1990 CHEVROLET 2500
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 20,000 MILES
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?
Thursday, February 7th, 2019 AT 6:12 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Thursday, February 7th, 2019 AT 6:56 PM

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