just bought a donzi madalion with a 90 sport jet, clogged it up with sea weed , then shut it off to unclog the screen... when i went to start back up, it would barely turnover... after much trying i opted for a tow, and while i was being towed, i tried again and she fired right up.... started it up at home with a "dealers flush" attached and it is doing it again.... it cranks fine with the plugs removed. the starter is brand new and all the wires are triple checked for tightness and quality for optimum power to the starter.. does anybody have any idea what this might be??????