i have no spark going to either cylinder. engine had been running fine no problems. then the last time i started it, it ran for about 30 seconds and died completly no spark nothing. took it home did a couple simple test to try and find out why i don't have spark. i figured if i had coil problems the engine would have been running bad before it died. im thinking i need to replace the swicth box that year the recepetator is in the switchbox. if any one has had similar problems or if you think the swicth box is the rite way to go please give me your input. thanks.