Will a faulty stator or power pack cause sporadic running. My 1998 90 hp SPL runs fine and then suddenly loses power like it is running out of fuel. After idling back and cruising at 1500-2000 RPM for a time (never shutting the engine off), engine will take throttle for a couple of minutes then loses power. I have noticed that initially my voltmeter reads about 13.5 - 14 volts , but when all this stuff starts to happen it is reading about 15 volts -- which I think may be too high for charged batteries.??