The Engine light is on and the car idles roughly. It was diagnosed earlier as an engine misfire.
Single cylinder misfires are usually caused by ignition components which is where I would start with on this car. Verify the ignition cap and rotor are still in one piece and that the wires are not arcing losing spark. Have a mechanic scan for codes to find out which cylinder is misfiring (P0301 for cylinder 1, P0305 for cylinder 5, etc.).
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