2003 Ford Focus CYLINDER 1 MISFIRE 1ON 1

Tiny
LIFEGOD1
  • MEMBER
  • 2003 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 132,999 MILES
CHECK ENGINE LIGHT CAME ON AND DEALER SAYS IT WAS CYLINDER ONE MISFIRE.
Saturday, March 14th, 2009 AT 8:58 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check no.1 cylinder's sparkplug/compression/injector

Engine Misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Saturday, March 14th, 2009 AT 9:06 PM

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