Have the wires and plugs been changed at any time? The wires may be arcing through the boots when the wires are installed and close to the cylinder head. Wet conditions may make this worse. Also, has anyone checked the coil for cracks?
Have the wires and plugs been changed at any time? The wires may be arcing through the boots when the wires are installed and close to the cylinder head. Wet conditions may make this worse. Also, has anyone checked the coil for cracks?