Re: 65 90hp inline 6cly
Yes it sounds like that is the problem,very common.I have read where guys will clean up the leaky area,put the plug in and then load up the plug area with RTV. Very little water pressure exerted there. Or do it the right way and install new gasket. PB blast all the bolts, let soak, then gently remove them,heavy corrosion probability and snapped heads of bolts are also common.If they snap usually there is enough thread that you can grab the studs with a new pair of original vise grips,not craftsmen, and resoak,then remove.