SHO 250 4 stoke making a humming like sound at idle, but goes away sometimes when in gear. No warning alarm and water pressure is good. Any ideas
SHO 250 4 stoke making a humming like sound at idle, but goes away sometimes when in gear. No warning alarm and water pressure is good. Any ideas
The electronic throttle valve hums. The motor is quiet at idle but you have damned good hearing if you can hear the valve. Assuming that is what you are hearing.