1969 55hp 3 cyl 2stroke. took her out today on my 16 foot starcraft and the engine wouldnt wind out. checked it out and top cylinder had some oil seeping from plug. started engine pulled plug wire and had good spark. pulled plug and was clean but oily and new last year. will replace plug but if it doesnt solve problem what else could it be? engine always kicked butt and really moved this aluminum boat through the water. thanks for the input

