by Jeff
(Ludington, mich USA)
Winterized engine end of 2019 season and stored in heated garage. Engine in water at idle and low speed runs perfect. No spitting or cutting out. When increase throttle engine starts to smoke and gets worse at higher rpm until I slow down and return to idle and no smoke. Not sure what's causing the problem at higher rpm. The smoke seems to be white that's coming from the boats exhaust. Only run higher grade marine gas in this boat. Thanks