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1998 Ford Mustang miss

Tiny
EU
  • MEMBER
  • 1998 FORD MUSTANG
Engine Performance problem
1998 Ford Mustang V8 Two Wheel Drive 90000 miles

after engine warms up we have a miss, felt more
at higher rpm. We already replaced. Wires, plugs,
coils, fuel filter, air filter, no codes?
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Friday, February 13th, 2009 AT 5:43 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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, February 14th, 2009 AT 1:21 AM

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