How to deal with carbon deposit in LaVida engine?

The treatment methods of carbon deposit in LaVida engine are: 1. Remove the engine decorative cover, remove the throttle valve, and clean the throttle valve with carburetor cleaner; 2. Open the engine oil cover, pour in the whole tank of cleaning agent, cover the engine oil cover, turn off the engine after the ignition idling for 10 minutes, and clean the carbon deposit inside the engine; 3. Before refueling, add the whole bottle of fuel additive to the fuel tank and clean the fuel nozzle, combustion chamber, spark plug and throttle; 4. Pour the cleaning agent of the air intake system into the liquid storage tank of special cleaning equipment, connect the air intake system, and suck the cleaning agent into the air intake by vacuum when driving, so as to achieve the cleaning purpose. LaVida is a car owned by Volkswagen. Its length, width and height are 4605mm, 1765mm and 1460mm respectively, and its wheelbase is 2610 mm.