I own a .049 Cox engine and it ran really good for a while and now it wont even act like its trying to run. And today iv been messing with it for a good 5 hours, and i noticed that the whole time the cylinder was dry of fuel (exept a couple drops here and there) no matter how much i primed it. So just as a experiment i took the glow plug off and put a drop of fuel directly in the cylinder and then tried to start it. It ran perfectly for about a second or two (untill the fuel in the cylinder was burned up) then it immediatly died as if out of fuel, but it has 3/4 of a tank in it. So i think there is a problem with the engine pulling fuel into it. I cant figure out what to do, and i tried calling Cox and theres no answer there. Can someone here help me?

Fox

P.s. ill be glad to explain more as to whats happening if needed.