Fuel pump with a metering valve

There is provided a method of operating a fuel pump. The method may include reducing a pumping chamber pressure, the passive opening of a coupled with a pump chamber metering valve in response to the lowering and generating a rotational output of a motor, transmitting the rotational output to a applied to the metering valve actuating force via a metering valve actuator and preventing that the metering valve closes, on the maintenance of the exercise of the operating force, while the metering valve is open, contained.