Motor ran fine for years, took motor off boat & replaced it with bigger motor. After 2 weeks it blew up so put 100 hp motor back on boat. Motor started, ran for a few minutes & stalled. Replaced pulse pack now ran good for about 25 minutes & completely shut down like turning off the key (no sputtering, not a gas issue). Tried to start motor back up while on water & just cranked over. Hours later motor started back firing when trying to start it back up. Everything checks out alright (pulse pack, plugs, wires, fuel, carbs). Mechanic mentioned possibly flywheel magnets. Possible? Any help would be great.<br />Thanks
