... Cleaner, Choke Cleaner remove grease, dirt, gum clean PVC valve, ERG valve, increase combust Captain Carburetor Cleaner, Carb Cleaner, can ... remove greasy dirt, gum, and carbon deposits on PVC valve, ERG valve, choke and other parts, It can easily flush ... interfere with performance.MANIFOLD HEAT CONTROLS: Spray exposed ends of heater valve shaft of cold engine. After penetration, move the counter ...