Fuel injection arrangement

The fuel injection arrangement for a piston engine comprises a number of fuel injection pumps (1), each fuel injection pump (1) being configured to inject liquid fuel into a cylinder of the engine, at least one feed pump (2) for supplying fuel to the fuel injection pumps (1), fuel supply line (3) connecting the fuel injection pumps (1) to the feed pump (2), a return line (4) for receiving excess fuel from the fuel injection pumps (1), and pressure regulating means (8) arranged in the return line (4). The arrangement is provided with a bypass line (5) allowing outflow from the fuel supply line (3) and/or the return line (4) for reducing pressure pulsations.