Fuel routing system of a gas turbine engine and method of routing fuel

A fuel routing system 30 of a gas turbine engine 10 includes a primary fuel circuit 32 in communication with a fuel source and a fuel distribution manifold 34. Also included is a secondary fuel circuit 50 extending from the primary fuel circuit 32 to a plurality of fuel nozzles 52 configured to direct fuel to a plurality of combustor chambers. Further included is a main fuel flow control valve 41 disposed in the primary fuel circuit 32 for restricting a fuel flow to the fuel distribution manifold 34 upon removal of an electrical load operably coupled to the gas turbine engine 10. Yet further included is a plurality of check valves 60 disposed between the secondary fuel circuit 50 and the primary fuel circuit 32 for restricting the fuel flow between the secondary fuel circuit 50 and the primary fuel circuit 32.