My cub been sitting almost a year cause it needed a clutch and I got too busy now it needs a carb rebuild cause it flooding I guess the needle is sticking. Anyways it will run more normal without the air cleaner cap on but it idles super high. Think it a mixture of it getting too much fuel and without the cap adding more air to the mixture causing it to idle high ??? I'm rebuilding the carb after the show plus new points