I have a 1989 2 stroke twin cylinder 40 hp yamaha.
Runs perfectly for 10 min then jumps to 1 cylinder and engine red light comes on. Doesn't cut out just runs on one cylinder. Throttle back to idle, it clear then runs for a period of time and does the same. all obvious things have been replaced or checked. New plugs plug caps, fuel filter etc.
Runs at full throttle for a while the back to one cylinder and light on. ???????????
Runs perfectly for 10 min then jumps to 1 cylinder and engine red light comes on. Doesn't cut out just runs on one cylinder. Throttle back to idle, it clear then runs for a period of time and does the same. all obvious things have been replaced or checked. New plugs plug caps, fuel filter etc.
Runs at full throttle for a while the back to one cylinder and light on. ???????????