... , stalling and increased gasoline consumption.4. Carb Cleaner's Superior formula can remove Gum, Varnish and ... engine for 5-10 minutes.2. Remove the air cleaner. For the engine at fast idle(5,000- ... 6,000rpm), spray the carb cleaner into the air horn, flooding choke, throttle shafts and plates ... 4. Turn off the engine and instal the air cleaner again.Caution:1. The product is extremely flammable. ...