What should I do if the fuel consumption of the nozzle increases sharply after Jetta cleaning?

After cleaning the nozzle and throttle, initialize the engine computer. Because there is a certain amount of carbon deposit before cleaning, which affects the fuel injection quantity of the injector, the computer will adjust the fuel injection pulse width appropriately according to the combustion condition of the engine. After you clean the fuel injector, if the computer still controls the fuel injection quantity according to the original data, the fuel injection quantity will increase, the throttle opening will not return to the factory setting, and the air intake and fuel consumption will also increase. All you have to do is initialize the engine computer, or run it for a while, and then the engine computer will be fine after learning it.