This is the CD2 ignition. The top plug refuses to fire when the air and water temperatures are cold. Often will warm up and then run fine, but during December trip refused to run on both cylinders. I have replaced both plugs, both plug wires, both coils, the head gasket, the charge coil, and the sensor (didn't have the tool to set the spacing on the charge coil and sensor...but it ran fine in the summer.) Am I down to replacing the (expensive) power pack?
