FUEL SYSTEM AND RESPECTIVE METHOD

A fuel system (14) for a gas turbine engine (12) includes an engine fuel manifold (24), a hydraulic actuator (38), and a drain piston assembly (36). The hydraulic actuator (38) actuates in response to a change in pressures within the hydraulic actuator (38). The drain piston assembly (36) is fluidically connected to both the hydraulic actuator (38) and the engine fuel manifold (24). The drain piston assembly (36) receives fuel from the engine fuel manifold (24) and sends fuel to the hydraulic actuator (38) during engine shut down.