The above engine just quit during flight and I could not start it again. I never had any problems with it previously. I noticed that it was not pumping any fuel. I examined the carb and even though it was clean like new, I still cleaned it and replaced the screen, the pump diaphram as well as the metering diaphram and it still does not pump fuel. What else could be the problem? Would there be any problem with the engine itself other than the carb? It has plenty of compression. Any suggestions would be most welcome. Many thanks.