I have a new problem. I was driving about a week ago when all of a sudden my engine got real rough and hardly had any power, like it was not running on all cylinders. I kept driving it for about 2-minutes when it just returned to normal and was fine for about a week. Today after a short trip I went to drive the car and when i started it it returned to the rough running, little power and i can smell it is running very rich. Drove for almost a hour and no change.
Recently I replaced plugs, wires, coil packs, oxygen sensor, Idle air valve.
Can I pull one wire at a time of coil pack with car running without getting a shock. This was i would be able to pinpoint if it is a problem with a wire or plug.