FRIEND OF MINE HAS A 65HP MERC FOUR STROKE. RECENTLY IT SUNK. HE PULLED DISTRIBUTOR OFF CLEANED AND DID ALL THE RIGHT STEPS. WAS ABLE TO START IT BUT NOW HE IS GETTING NO SPARK AT ALL. HAS CLEANED EVERYTHING BUT IS STUMPED AS TO WHY NO SPARK. ANY IDEAS OTHER THAN NOT TO OWN A MERC?