1. Wash by "snap the bottle". This method is simple and easy to operate, as long as the appropriate cleaning agent is stuck into the dedicated equipment, the connecting pipe is separately connected to the inlet and the inlet pipe according to the regulations, and then the engine is running for 20 minutes.
2. Free cleaning and cleaning. This method utilizes the pressure and circulation network of the original system of the engine, and replaces the fuel combustion with a cleaning agent to clean the carbon in the cylinder, and then discharges it by using the exhaust system. Although this method is simple, there are too many kinds of cleaning agents, and the specifications are different. If the cleaning agent of poor quality is different due to different heating values, it is easy to damage the piston, the exhaust valve and the cylinder wall during the cleaning process, and the fuel injection is good. The nozzles and seals of the device and the three-way catalytic converter also have some damage.
3. Ultrasonic cleaning method. This is the most common now, and the cleaning effect is better. You need to remove the injector.