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I have tried tune up and new fuel pressure regulator

Tiny
MT50PAN
  • MEMBER
  • 1995 CHEVROLET S-10
  • 111,000 MILES
I have a 1995 chevy s-10 4.3l efi Z will not start in morning but if I plug in block heater it will start I tuned it up but still wont start without heat any ideas?
Tuesday, October 11th, 2011 AT 3:33 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Have you confirmed that the fuel pressure is within spec? It sounds like a weak pump. I don't understand what you mean by "But if I plug block heater, it tuned." Also, what temps are you in presently?
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Tuesday, October 11th, 2011 AT 4:03 PM
Tiny
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If I plug the block heater in it would start
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Tuesday, October 11th, 2011 AT 4:56 PM
Tiny
JACOBANDNICKOLAS
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If you don't use the block heater, does the engine crank and try to start?
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Tuesday, October 11th, 2011 AT 5:04 PM
Tiny
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  • 4 POSTS
It cranks but really dose not sound like it will fire
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Tuesday, October 11th, 2011 AT 5:09 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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I would recommend starting by checking the fuel pump pressure. It may be weak.
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Tuesday, October 11th, 2011 AT 5:21 PM
Tiny
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Thank you very much
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Tuesday, October 11th, 2011 AT 5:41 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Let me know what you find.
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Tuesday, October 11th, 2011 AT 5:51 PM

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