I'm working on a gas CC cart for a guy that played 4 holes and it quit running. It would start but then die. He went back out to get it after the round and it ran all the way back to the barn. Fuel filters were fine as was the carb and fuel pump and it had good spark. Figured I'd fixed it by cleaning the carb. Today he made it 12 holes and same thing. After it cools it seems to run and the dif between the 2 days it quit was that today it was 15 degrees cooler outside. I've done the search thing but I can't be there when it quits. Should I replace the coil and the 2 micros?