Abstract: A check valve is disposed in a suction-side line of a feed pump in a fuel feed system and permits the fuel to direct only toward a feed pump; a bypass line is provided for bypassing the check valve; and a pump is disposed in the bypass line. Alternatively, a line is branched from the suction side line of the feed pump in the fuel feed system and is communicated with a gallery chamber within the feed pump; a check valve is disposed in the branched line to direct the fuel only flowing toward the gallery chamber line; and a pump is disposed in the branched line upstream of the check valve. As a result, when air intermixes in the fuel feed system, the pump is energized prior to starting the engine to force the fuel having the air bubbles entrained therein though the feed pump into a fuel tank, thereby accomplishing air bleeding operation.