I have an older Chrysler 105. It runs fine for about 5 minutes, then quits and won't start again until it has sat for about an hour. After it stalls, I get no spark. After everything is cooled down, it will fire right up again... Suggestions? I desperately need this engine running in T- 6 days and counting. Taking my daughters to Lake Delton next week... Any help near Kewaunee or just online would be greatly appreciated. How do I figure out if my coil is good? Would it be that the coil is junk when it gets hot, but fine when cold? Could I replace that with a car style Blaster 2 coil?