1999 Saturn Sl1 Motor Turns Over Start Suggestions List Things Already Checked

115,000 MILES
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ANONYMOUS
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motor turns over no start any suggestions
here is a list of things already checked
1) new plugs and wires
2) compression in all 4 cylinders is 96-110
3) fuel pressure at the rail is 30-40
4) all plugs have spark
5) and timing is on

p.s. some times it starts and will run for about 30-40 minutes and then shut off and wont start
Feb 2, 2013 at 4:24 PM
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JACOBANDNICKOLAS
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If you have spark, fuel, compression, and the timing is correct, it should run. Have you checked the fuel injectors to see if they are getting power? Are you getting a good hot blue snapping spark to the plugs?
Feb 2, 2013 at 5:08 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Are you sure that's the correct compression?Min compression is 175psi.
Feb 2, 2013 at 5:10 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
If saturntech9 says your compression is low, it is
Feb 2, 2013 at 5:17 PM
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