My Ford Focus is misfiring on cylinders 1 and 4 I have changed the coil pack but no joy please help

Tiny
HUTCH9449
  • 2003 FORD FOCUS
  • 80,000 MILES

Spark plugs were also changed 3 months ago

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Saturday, February 4th, 2012 AT 5:12 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
  • 68,398 POSTS

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

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Saturday, February 4th, 2012 AT 5:33 PM

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