Is it necessary to clean the fuel system at 20,000 kilometers?

[DelBradley]

Generally, cleaning the fuel system at 20,000 kilometers is not necessary. Here is some relevant information about the vehicle's fuel system: Composition of the fuel system: fuel tank, fuel pump assembly, filter, fuel delivery pipe, fuel return pipe, fuel filler pipe, carbon canister vent pipe, etc. Cleaning interval: The fuel system should be thoroughly cleaned every 20,000 kilometers or every two years. The cleaning cycle may vary depending on the type of vehicle usage. Vehicles that frequently drive on highways can delay the cleaning, while those often used on city roads may need earlier cleaning.