1988 Yamaha 50ELG made a buzzing noise and quit after having run full open for maybe 10 minutes. Upon starting, wouldn't low idle. With a quick shift was able to get running, but only would run at medium speed. Top end again brought buzz and quit. Did this serveral times while getting back to dock. Think oil light stayed green and cooling water was discharging.<br /><br />Any advice appreciated!<br />Thanks
