Originally posted by AMGRacer
Problem is cause by two possible factors:
1. Crank overheat. This can come from improper clutch settings or too lean engine.
2. Carb overheat. Basically it heat soaks from a too hot engine.
Both "boil" the fuel as it enters the motor and makes it impossible to start. You actually sometimes see the fuel retreat up the fuel line just after you prime the motor when very hot.
The condition means you are running too hot generally. You need to cut more body holes or richen your motor.
Thanks for the info. Pretty logical when I think about it now - if the engine allows itself to restart when it cools down, then it can only be that the engine was running too hot
I'll try and collate the information here for the FAQ - it is sadly lacking an engine section at the moment.