How long will it take to drive after cleaning the throttle before the fuel consumption will recover?

Hello, the fuel consumption of the car will increase with the age of the car, but it will not be much larger. Don't worry, washing the throttle just washes the carbon on the surface. There are still a lot of carbon deposits on the surface of intake manifold, cylinder chamber and spark plug. Carbon deposition is dry, and it will suck a small amount of gasoline, so it will consume oil. The more carbon deposits, the more fuel consumption. There are many impurities in gasoline and air in China, and carbon deposition is inevitable.