I have an old 16 hp single cylinder cast iron Briggs and Stratton. It has an intermittent ignition miss after replacing points, condenser and spark plug. After 10 to 15 minutes it can stop. I converted this unit to battery ignition with a mid 80's ford ignition coil and a ballast resistor about 15 years ago and it worked fine. Is there a way to determine what is causing the miss? I am thinking it is probably a bad new condenser or the coil? I confirmed the miss with an inductive timing light. I have another similar coil, or I can get another condenser, either used or new. Posted on Tractor Talk also. Thanks, Roy