Motor keep turn and cranking when hit the starter but won`t strat, customer said.
Spark plugs been wetted by water. Water must be back flow into the cylinder which from water box through to exhaust sys .
Water bridging between electrode and core. 
Water came out from spark plug hole when cranking motor.This customer didn`t realize water in motor after ski rollover becasue engine was cranking well.
In short this time not much water back flow into cylinder.
However if engine won`t start after ski rollover better to check spark plugs and
make sure not water inside of cylinder. If water inside of cylinder better to take doctor ASAP.
