Gumout 14 oz Jet Spray Carburetor & Choke Cleaner. Cleans the outside of the carburetor and the inside of the carburetor throat. Also cleans the PVC Valves. Removes gum, varnish and dirt build-up. Helps relieve hard starting, rough idling, stalling & high exhaust emissions, gasoline waster & loss of -Inchpep-Inch.