1999 Pontiac Sunfire 2 2 Letter Number 1 Cylinder Misfire Changed Spark Plugs

1999 PONTIAC SUNFIRE
138,000 MILES
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MCKEAN
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I have 1999 Pontiac Sunfire 2.2 letter and it has a number 1 cylinder misfire so I changed the spark plugs, wires and one coil and it is still running with a sputter, what do I do to fix it?
Dec 20, 2012 at 2:49 AM
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SATURNTECH9
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So you still have a P0301?Have you done a compression test?
Dec 20, 2012 at 5:10 AM
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MCKEAN
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No how do I do that?
Dec 20, 2012 at 5:22 AM
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SATURNTECH9
  • ✓ASE Certified Mechanic
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You can rent a compression tester at auto zone remove all the spark plugs then screw the tester into each each spark plug hole.When testing each cylinder you hold the gas pedal to the floor and crank it over ten revolutions.You can feel the engine kick every revolution that is complete.
Dec 20, 2012 at 5:24 PM
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MCKEAN
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Ok thank you could it also be a problem with the computer as well?
Dec 20, 2012 at 11:15 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Yes but you have to eliminate the basics first fuel spark compression etc before looking elsewhere.
Dec 21, 2012 at 1:56 AM
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