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i have a 98 ford f150 4x4 with a 4.6. the computer says cyl 2 &6 are mis firing . I have replaced the coil packs the spark plugs and wires. I idles pretty good but shakes bad with easy acceloration any suggestions? there is no water around the plugs it is dry.Please help someone.
What brand of plugs and wires did you use? These engines like Motorcraft plugs and wires. Get a Haynes book. It shows how to ohm test the coil packs. Also, you can switch the coil packs side to side and see if the same two cylinders show up after resetting the computer.
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