The FUEL TOOL is a complete package for fuel system preventative maintenance. Simple and easy to operate, the FUEL TOOL, when used with GX-301 cleaning solution, removes carbon, gum, varnish and other contaminants from the engine's fuel system and combustion surfaces. Used as directed, a cleaning service will reduce emissions, restore horsepower, improve drivability and increase fuel efficiency. The fuel tool can also be used to clean the intake manifold, intake valves and throttle plate by utilizing the S - sprayer adapter.