I have a 93 25 horse Johnson that was running fine and then while I was going full throtle it lost all power and died. After I left it sit for a while it kicked over but didn't stay running and then wouldn't even think about kicking over again. I checked the spark and I had spark for a few pulls of the cord, so i put the plugs in and tried to start it, it didn't, and pulled them out and both had no spark. From what I read on troubleshooting guides it seems like the power pack could be the problem. I checked the kill switch already. Any help would be apreciated.