Mechanics

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

2003 Ford Focus • 80,000 miles

Spark plugs were also changed 3 months ago
Avatar
Hutch9449
February 4, 2012.



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