2007 Ford Focus Engine misses when stop at intersection

70,000 MILES • 4 CYL • FWD • AUTOMATIC
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SCARLETT1
  • MEMBER
  • 1 POST
Had the car to dealer but no codes. Checked the plugs and all are good.
Mar 2, 2010 at 8:07 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
Mar 2, 2010 at 8:10 AM
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