Fuel injection arrangement

The fuel injection arrangement for a piston engine comprises a number of fuel injection pumps (1), a feed pump (2) for supplying fuel to the fuel injection pumps (1), a fuel supply line (3) connecting the fuel injection pumps (1) to the feed pump (2), and a return line (4) for receiving excess fuel from the fuel injection pumps (1). The arrangement is provided with a branch line (5) having a first end and a second end, the first end being connected to the return line (4) and the second end being closed.