Methods of cleaning a component within a turbine engine

A method of cleaning a fuel supply system within a turbine engine, said method comprising:

• disassembling a portion of the fuel supply system when the turbine engine is coupled to an airframe to define an access point in a fuel manifold, the access point in fluid communication with the fuel manifold and an interior passageway of a fuel nozzle, wherein the fuel nozzle has coked hydrocarbons formed thereon as a result of fuel decomposition;
• and discharging a flow of a cleaning solution from a cleaning tank that is coupled to the fuel manifold via the access point, through the fuel manifold, and from the fuel manifold into the interior passageway of the fuel nozzle from the access point, wherein the cleaning solution is configured to remove the coked hydrocarbons from the interior passageway of the fuel nozzle, and wherein the cleaning solution includes a solvent to dissolve the coked hydrocarbons;
• discharging the flow of the cleaning solution from the fuel nozzle and into a combustor;
• draining the cleaning solution through air holes in the combustor into a combustor case;
• and draining the cleaning solution from the combustor case through a drainage port.