Method of supplying fuel to engine

A method (200) for supplying fuel to a dual fuel engine (100) or a gaseous fuel engine is disclosed. The method (200) includes regulating a gas admission valve (150) disposed between a gaseous fuel line (146) and an intake port (116) of a cylinder (104) of the engine (100) to reduce flow of gaseous fuel into the cylinder (104). A shut-off valve (148), disposed between a gaseous fuel reservoir (144) and the gaseous fuel line (146), is closed to restrict flow of gaseous fuel from the gaseous fuel reservoir (144) to the gaseous fuel line (146). An inert gas inlet valve (154), disposed between an inert gas reservoir (152) and the gaseous fuel line (146), is actuated to supply inert gas to the gaseous fuel line (146) and to flush gaseous fuel remaining in the gaseous fuel line (146) into the cylinder (104) via the gas admission valve (150). The inert gas inlet valve (154) is then closed to restrict supply of inert gas to the gaseous fuel line (146).