i cant seem to get fuel to my carby. i have tried everything i can think of. i have tried running a fuel line directly from a can of petrol to the fuel pump and everything however the fuel wont make it to the carby, the carby isnt the problem as far as i can tell because i pulled the fuel line off before the carby and no fuel is making it that far, it seems that the fuel pump is the problem so i put one that definatly works in it. but the same problem remains. only thing i can think is that the whatever drives that little lever thing inside the engine isnt working? is this possible. could anything else be doing it, oil pressure? ...? any help would be appreciated.