Hello, I am new to the forum. I tried to search my question, but I did not find anything quite like I was looking for. I traded for a 1972 50 HP Johnson (50ESL72C) and twin parts motor about 2 weeks ago. I have been tinkering with it, but not sure if I have the problem diagnosed correctly or not. It cranks very good, but then only runs on 1 cylinder (sometimes will pick up and run on both briefly). I have spark on both plugs, however when I cranked it I notice a little bit of gas coming from the top carburetor. I cleaned it and the gas stopped coming from the front of the carb, but still only running on 1 cylinder. I replaced the rectifier with a new one. I changed the plugs, ran the same. I changed the power pack, motor wouldn't start. Went back to the other power pack, disconnected the temp sensor wire, ran the same. I disconnected the diode wires and the motor seems to be running better, but I only got to run it for a second before I had to stop.
Can the diode be causing this problem? Do I have a bad diode or should I continue checking?
I am a novice at working on outboards at best. My dad is pretty good, but says himself he runs into trouble with the wiring. I have the test list I have am working through; obviously I got to the diode test and stopped. Any help would be greatly appreciated! Thank you in advance!
Can the diode be causing this problem? Do I have a bad diode or should I continue checking?
I am a novice at working on outboards at best. My dad is pretty good, but says himself he runs into trouble with the wiring. I have the test list I have am working through; obviously I got to the diode test and stopped. Any help would be greatly appreciated! Thank you in advance!
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