Gumout Carburetor and Choke Cleaner 16 oz, Pack of 12Gumout carburetors and choke valves can become clogged with gum, varnish and dirt, affecting performance. Gumout carb and choke and parts cleaner quickly removes these deposits from the inside and outside of the carburetor to improve engine performance and fuel economy. It also effectively cleans all nonpainted metal parts and surfaces. Improved performance and fuel economy, reduced emissions Cleans carburetors, linkage, choke valves and unpainted