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you either did not gap the plugs to spec or you put this wires on wrong
Fuel injectors or coil
I have a 95, had a misfire... mine was because of the plug wires... changed the wires and plugs mis fire stopped...
Last summer, the cylindars started to misfire on my 2002 lancer. Once the spark plugs were changed, I haven't had any more issues.
There are a couple of reasons why a 1999 Ford Contour may misfire. The spark plugs may need changed or the coil pack may be bad.
if the engine light is blinking a misfire condition has been detected. check plugs and wires.l
There is an engine misfire, probably spark plugs issue.
could be distributor cap or rotor
A spark plug that is causing a misfire is one of many reasons for the check engine light to come on.
did you change the wires also. if not you probablly have a loose wire for one of the plugs. does it run any different
Possibly a bad ignition coil or coil,bad timing, possibly a burnt out cylinder.
Yup it definately does. One time I replaced my spark plugs then my check engine light came on. I read the code and it read cylinder 3 misfire detected. So I tightened my spark plugs even more and the light came right off. The rule is tighten them one and a half turns.