CAR CRANKS BUT WONT START WHEN COLD UNDER.

  • Tiny
  • Jeffclark29
  • 1989 OLDSMOBILE 98
  • 173,000 MILES

Car cranks but won't start when cold ( under. 30 degrees)
If and or when car does start, after its warm car starts fine until
Next morning after sitting all night then car cranks forever
When air temp stays above 30-35 car cranks and starts fine?

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Saturday, January 12th, 2013 AT 7:58 PM

5 Replies

  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,401 POSTS

When it is cold, check fuel pressure. It sounds like you have a weak pump.

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Sunday, January 13th, 2013 AT 3:26 AM
  • Tiny
  • Jeffclark29
  • MEMBER

Hadn't thought of that thanks

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Sunday, January 13th, 2013 AT 6:48 AM
  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,401 POSTS

Let me know what you find. Also, an easy way to test it is to see if the engine will start with starting fluid when cold and stay running. Some pumps produce enough to keep the engine running, but not enough to start them cold.

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Sunday, January 13th, 2013 AT 10:53 PM
  • Tiny
  • Jeffclark29
  • MEMBER

Starting fluid didn't help.

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Sunday, January 13th, 2013 AT 10:58 PM
  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,401 POSTS

Have you checked to see if you have a good hot blue snapping spark to the plugs when cold?

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Sunday, January 13th, 2013 AT 11:13 PM

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