The oil channels of carburetors will be blocked without cleaning. Please clean up the oil channels and air filters as well as use the clean fuel before installing the carburetors. Always check your fuel pressure before installation. Use the fuel pressure regulator to keep fuel pressure no higher than 2.50 psi.
High fuel pressure can impair engine performance and fuel mileage. (Please compare your carburetor against pictures to ensure this part fits your vehicle).