I have tested the rectifier and it is putting out about 12.73 but the guage is up at 18v.
I also have intermittant issues with my RPM guage where sometimes it does not move from 0 RPM but most of the time it works fine.
seems like it runs on 3 cylinders then 4th jumps in and engine revs up for a second and then runs smooth at idle for a bit then goes back to idling rough again, the cycle continues. Not noticing it at open throttle, Boat still gets up on a plane nicely and still does about 30mph at 5500 rpm...
1980 Johnson 115 has developed a random misfire on one cylinder. tried replacing ignition coil, coil pack, plug and wire but nothing has worked so far. It starts and runs but has an occasional cough that has been tracked down to one cylinder by removing plug wires one at a time while engine is...