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engine problem on 2000 Ford Focus

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
2000 focus lx.It is running on 2of4 cylnders only.new pvc valve, plug wires and plugs.
(3) Answers
(1) Comments
Plug wires crossed, failed coil pack. Coil can fail on any or all of the plug wire circuits. Check for spark at the misfiring cylinders.