Penray 2214 Gum Solve - Carburetor and Choke Cleaner - 15-Ounce Aerosol Can Helps Restore Carburetor Performance by Removing Gum, Varnish, Carbon Deposits and Dirt Build-Up Cleans and Frees Linkages, Cables, Actuators, Fuel Injection Intake Systems, and PCV Valves Safe for Oxygen Sensors and Catalytic Convertors Not Recommended for use on Plastic Parts or Painted Surfaces 100-Percent VOC compliant in 50 States