I have a 1986 mercury 2 stroke 60 hp outboard. It set up for some years. It would run and idle, but bottom cylinder was not working. Compression is 100 lb on all three cylinders with a harbor freight gauge.
I cleaned the carbs and replaced the main jets. I rebuilt the fuel pump. Gas is clean, filter is clean. Got all cylinders running.
The motor runs at 2700 to 3000 rpm. Throttle cable is disconnected. Butterflies are closed in the carbs. There is .020 clearance between the carb throttle roller and the throttle advance when the throttle arm is at the lowest position. I have adjusted the spark advance to retard spark as far as it will go. When I manually retard the spark by moving the lever by hand it does not slow down.
I sprayed carb cleaner around the carbs and fuel pump while the motor was running looking for where it was sucking air and found a little, pulled them all off and sealed with permatex. Now there is no change when I spray around the gaskets with the motor running. I took the new needle valve and seat out of the lower carb and put the old one back in. No change. There is a steady stream of fuel coming out of the first small pipe in the lower carb. I put my finger over it and the motor slowed a little, coughed. The motor is running smoothly. THere is a hesitation when I advance the throttle quickly to max (WOT) the first time, the second time there is no hesitation, the motor revs quickly. I do not do this a lot, I think it is bad for the motor. I got to replace the impeller again before I can restart it, but if anyone has any suggestions I will do them immediately if there is any chance of it working.
I do not have a manual, I do have information off the internet about link and sync and have followed that except where it requires a timing light. I do not have a timing light. I will get one if I have to.
I cleaned the carbs and replaced the main jets. I rebuilt the fuel pump. Gas is clean, filter is clean. Got all cylinders running.
The motor runs at 2700 to 3000 rpm. Throttle cable is disconnected. Butterflies are closed in the carbs. There is .020 clearance between the carb throttle roller and the throttle advance when the throttle arm is at the lowest position. I have adjusted the spark advance to retard spark as far as it will go. When I manually retard the spark by moving the lever by hand it does not slow down.
I sprayed carb cleaner around the carbs and fuel pump while the motor was running looking for where it was sucking air and found a little, pulled them all off and sealed with permatex. Now there is no change when I spray around the gaskets with the motor running. I took the new needle valve and seat out of the lower carb and put the old one back in. No change. There is a steady stream of fuel coming out of the first small pipe in the lower carb. I put my finger over it and the motor slowed a little, coughed. The motor is running smoothly. THere is a hesitation when I advance the throttle quickly to max (WOT) the first time, the second time there is no hesitation, the motor revs quickly. I do not do this a lot, I think it is bad for the motor. I got to replace the impeller again before I can restart it, but if anyone has any suggestions I will do them immediately if there is any chance of it working.
I do not have a manual, I do have information off the internet about link and sync and have followed that except where it requires a timing light. I do not have a timing light. I will get one if I have to.