A method (200) for washing a turbine engine (104) of a gas turbine engine includes positioning a plurality of spray nozzles (74) of a wash system (10) into or through the plurality of borescope holes (146) defined by the turbine engine. Each of the plurality of spray nozzles are fluidly connected to a respective plurality of wash lines of the wash system. The method also includes providing a pressurized flow of wash liquid through the plurality of wash lines (58), through the plurality of spray nozzles, and into the turbine engine to wash the turbine engine.