MY IS MISFIRING ON CYLINDERS 1 AND 4 I HAVE CHANGED THE COIL PACK BUT NO JOY PLEASE HELP

2003 Ford Focus

Tiny

Hutch9449

February, 4, 2012 AT 5:12 PM

Spark plugs were also changed 3 months ago

FOUND 430 RELATED QUESTIONS

Cj7

41 ANSWERS
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1 Answer

Tiny

Jacobandnickolas

February, 4, 2012 AT 5:33 PM

Check to make sure the injectors are firing properly and check compression in the affected cylinders.

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