Strange that you felt no resistance with continual pumping. You DO know that the valves in the primer bulb have no springs. If held with the flow direction down the valves stay open and the bulb does not pump. For maximum pressure the flow direction should be UP. If the bulb stays flat, there is an obstruction in the tank. High resistance indicates the float valve is closed.(or obstructed) Gas running out of the carburetor indicates the float valve has NOT closed. . . 😆
