B62 Carburetor & Choke Fuel Injector Cleaner able to remove greasy dirt, gum & carbon deposits on PVC valve, erg valve, choke & Other parts effectively. It is easily & fast to flush off the charcoal residue on carburetor with its spray tube. B62 Carburetor & Choke Fuel Injector Cleaner can enhance combustion deficiency, good of save oil & decrease the gas pollution.