The motor will not increase the rpm's when the throttle is opened all the way. If you slam it wide open it will jump but then die back down. It will only run at or just above idle speed. The plugs have been changed. I have been told that it might be that the import might be jelled up. What do i...
I have a 93 johnson 20hp two stroke. It has been setting up for a while. I rebuilt the carborator, clean the plugs. When it runs it spudders every once in a while like once or twince at the most while running wide open. Could the points be rusty a little causeing the spuddering/popping noise?
