If you shut it off and wait 2 minutes will it restart? When hot the fuel going into the carb will go to a vapor pretty quick. One thought that could cause higher that normal intake plenum temperatures could be a improper operating heat riser valve.
No it won't start after 2 minutes today I waited 1 1/2 hour and managed to get it started but not easily. My heat riser butterfly was removed, its just there for appearance on the outside
what did you do to get it started? clearly it seems to be a fuel problem..did you check for fuel when it didn't start again? did you flood it?
