1996 Chevrolet Silverado Will crank but not start

Tiny
KENNEDYX4
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • 85,000 MILES
Have replaced battery, fuel filter, fuel pump relay. Took to mechanic who kept it a week because it started sometimes and did not sometimes. He replaced air filter, cap and rotor, plugs and wires, crank sensor and hall effect sensor. He also checked fuel pressure which was good and hooked up to a different computer. So, $466 later truck will crank and has spark and fuel but still will not start even though it sounds like it is going to. When this first started we could jump it off and get it to start but not now.
Tuesday, September 10th, 2013 AT 2:13 PM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
If you have spark and fuel, the engine should run. Have you checked to make sure the fuel injectors are getting power. You could have good fuel pressure at the rail, but if the injectors don't put the fuel into the engine, it won't run.

See if it will start for a couple seconds using starting fluid. If it does, then the problem is fuel related.

Let me know what you find.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
KENNEDYX4
  • MEMBER
  • 5 POSTS
Ok, thanks. Will try Saturday and let you know what happens.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
I'll look for your reply.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
What was done to the vehicle before this problem occurred? Ive seen a distributor off a tooth, or two, and give similiar results. Can you fill us in with some more details?
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
KENNEDYX4
  • MEMBER
  • 5 POSTS
Used starter fluid and got truck started. Drove it around and it ran fine. As of now it will still start without assistance.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
It sounds like you have what I call a lazy fuel pump. My guess is that the fuel pressure was too weak to start it. It may work for awhile and then start again. If it starts again with starting fluid and then runs, replace the pump.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
KENNEDYX4
  • MEMBER
  • 5 POSTS
Going to replace pump. Will let you know results. Thanks.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
I'll watch for your reply
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
KENNEDYX4
  • MEMBER
  • 5 POSTS
Took the bed off today and replaced the fuel pump. Truck started right up and has run great all day. Looks like a lazy fuel pump was the problem. Thanks for yoyr assistance.
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Wednesday, September 2nd, 2020 AT 6:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Glad to help. Let us know if you have questions in the future.

Joe
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Wednesday, September 2nd, 2020 AT 6:04 PM

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