My johnson won't run for more than few minutes, even with pumping primer bulb. When I disconnected the fuel line to carb and pumped primer bulb, only air moved little or no gas came out. I think the primer bulb is bad (even though I bought it new last year). When I squeeze the bulb it never gets hard. I also can feel a round object inside the bulb. I have a new fuel tank with male fittings. Do you think its definitely the primer bulb? Should I also buy a new fuel pump or clean the old one?<br />thanks in advance<br />Dan