Carb & Choke Cleaner - 12oz Designed to maximize carburetor performance. Quickly dissolves carburetor deposits such as gum, sludge & varnish to improve fuel system performance & enhance fuel economy.Applications:Automatic chokes, carburetor components, crankcase breather element, exhaust gas recycling valve (EGR), general purpose cleaner for non-painted surfaces, heat risers, intake parts, positive crankcase ventilating system including PCV valve. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.