I have a 93 Johnson 120 that is giving me fits. Carbs have been rebuilt, new power pack, and new trigger installed. The problem I am having now is when I start it on the hose the engine is idling at 2000 rpms. I have the service manual which says high rpm at idle is an air leak. What is the...
I have a 93 Johnson 120 VJ120TLETF when I throttle up to go when the TACH hits 3400 the motor runs rough for a few seconds like it is missing, then it smooths out and runs great. It seems to be electrical as I bumped the key switch and the key turned towards off, the key moved enough to cut...
I have a 93 Johnson 120 that has a miss at 3700 RPM. It will miss when throttling up or down. The motor will work through the miss and run fine. I did find by chance, that when I bumped the key back a little towards off the tach would stop working and the motor would run fine. So I took the...
I have a 93 Johnson 120 that has a miss at idle and will stall at times. I took the boat to the lake and the boat seems to be fine at wide open throttle. So far things I have done are:
1. I did a spark test and have spark at all cylinders that jumps 1/2" on spark tester.
2. Changed Spark...