How often do you clean the throttle and injector?

Clean the fuel injector once every 30,000 kilometers. The cleaning method is: 1, and disconnect the power supply of the automobile fuel pump; 2. Connect the disassembly-free cleaning special tool; 3. Open the valve of the disassembly-free cleaning special tool, start the engine to keep idling, and adjust the flow switch; 4. Increase the engine speed every 2 minutes until the cleaning agent is completely exhausted; 5. Release the system pressure of the disassembly-free cleaning tool; 6. Start the engine, check whether the oil circuit leaks oil, and test the vehicle to ensure normal operation.