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Car cranks but won't start when cold ( under

Tiny
JEFFCLARK29
  • MEMBER
  • 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
  • MECHANIC
  • 109,867 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
  • 3 POSTS
Hadn't thought of that thanks
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Sunday, January 13th, 2013 AT 6:48 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 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
  • 3 POSTS
Starting fluid didn't help.
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Sunday, January 13th, 2013 AT 10:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 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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