I have a Mercury 50 hp, 4 cyl, 1984 model. I had the carbs rebuilt, stator and trigger replaced in July. The compression is good the fuel line bulb pumps up hard and I know it is getting fuel. It ran well all summer and I put 60to 80 hours on the motor if not more. On occasion this summer when running the motor, the motor would cut off briefly then continue running. This would happen at WOT or half throttle or anywhere in between. Some days it would run flawlessly for hours then the next day it would cut out, but it would always refire and I would continue with my day. This weekend I winterized the motor and wanted to start it so I could fog the engine. After many attempts at starting the motor it would not even fire. I believe that it is an electrical problem causing this and that my previous stall outs are related. My theory is the "SwitchBox" is the most likely culprit. I would like to hear some opinions from anyone out there regarding this issue.
Thanks for your opinions on this.