[RCW]

If you are running on one cylinder it is likely either a pulsing coil (they are replaced as a pair), an ignition coil, the valves are loose on the missing cylinder, or you have a bad plug.

The wiring harness on these is such that if power is to one coil, it will also be to the other coil.

I really recommend you purchase the service and repair manual. These rigs are just about bulletproof if they are properly maintained. But, without the book it is easy to nuke the Igniter by grounding an excited wire by accident, or by grinding on the starter with the plug wires disconnected.

The cost of a new Igniter could buy you many service and repair manuals.