What causes my engine to misfire?

Answer by  beck (1099)

This usually means that the timing is off. It could be that your distributor cap or coil pack is going bad, your plugs or plug wires are going bad, or ignition is going bad, or something like the ECM or PCM is going bad. Lots of other possibilities also.

Answer by  Allstar (2071)

Possibly a fouled spark plug, especially if it's always misfiring on the same cylinder. It might also be an issue with the injectors, but I would check the plugs first.

Answer by  James916 (539)

Sounds like you need a tuneup. Replace your spark plugs, and wires. Also replace your fuel filter, and your distributor cap and rotor.

Answer by  Amber40 (24961)

Typically as misfire is caused by a problem in the ignition system. Anything from incorrect timing to worn plugs could be the cause. Do some routine checks on the engine and see if everything is in good shape. Be sure to also look for loose or broken wires.

Answer by  Amber40 (24961)

A lot of times misfires are simply caused by the ignition timing. It can become off to the pint that it causes a misfire. Do a tune up and check your timing. IT might be caused by a failing igntion components also. So pay attention to those also.