ive been trying to get this old motor running that i picked up and i think the fuel system is the reason for not starting. 1st the fuel line connections to the gas tank and the motor seem a little loose 2nd when i prime the bulb it doesnt go hard and seems to not be getting much fuel. it takes for ever to get much gas into the clear bowl of the fuel pump 3rd the gas that makes it into the clear bowl ends up dirty and green. im thinking the priming bulb not getting hard has something to do with the carb float, what else should i check?