[amanfrromthere]

I was mowing the other day and my 1864 randomly started running really rough and then died. I could barely get it to start again. Left it for a day and I was able to get it to start, but sounds like its only running on one cylinder. As soon as I try to give it any throttle, it'll just bog down. It'll move, but the engine can barely handle that regardless of throttle level.

If, when running, I pull off one of the spark plug wires, the engine will continue running with zero change. Pull the other one, engine dies immediately.

I replaced the plugs. Both appeared to be giving a spark if grounded to frame, though one side did seem to give off a stronger spark.

At this point, what's the best way to determine if it's fuel or ignition? Or is that description enough to make that determination?


Thanks