This means, removing the fuel rail from the air intake again. Meanwhile I also received the fuel line disconnector (light blue part) and I already disconnected one fuel line with it (the 2 ends are in the 2 red circles). And to free the fuel rail from the air intake, I also had to remove the bolt in the blue circle. This was really hard. Last time I had better access with the upper throttle body removed, but I did not want to remove it this time...