How to clean up the car after carbon deposition?

Generally speaking, carbon deposition is due to insufficient combustion of the mixture in the engine cylinder, and a large amount of carbon adheres to the valve, spark plug and piston, which affects the engine efficiency, the dissolution and atomization effect of the mixture in the cylinder, and reduces the engine efficiency. The direct injection nozzle of turbocharged engine is located inside the engine combustion chamber. When the engine is turned off, the fuel that is not sprayed from the nozzle will adhere to the nozzle and block the nozzle for a long time, resulting in poor fuel atomization effect. Fuel consumption has increased.

Carbon deposition in the intake system is mainly in the intake manifold and throttle. Cleaning the intake manifold is a bit troublesome, that is, what we usually call "hanging bottle", which requires professional equipment and tools to operate. It is recommended to go to a professional maintenance agency for cleaning. If carbon deposition has caused engine failure, such as idle jitter, difficult start-up, high idle speed, excessive emissions and other problems. You can use some cleaning agents at this time. If the carbon deposition is very serious (generally it will appear at least over 654.38+ 10,000 kilometers), then the engine needs to be completely disassembled.

When choosing cleaning agents, we must try our best to choose neutral cleaning agents, because alkaline or acidic cleaning agents will corrode the rubber and gaskets in the engine more easily, while neutral cleaning agents have weak cleaning ability, because we like immediate results, so auto repair shops generally don't like to recommend such products. In our daily trip, we can make the car run at high speed. When a car runs smoothly at high speed, it will largely discharge the carbon deposit inside the engine. This is also a lot of vehicles that often run at high speed, and its power reserve, including mileage, is longer than that of ordinary family cars.

Be sure to pay attention to other valve cleaning and in-cylinder cleaning. Small repair shops do not use liquid cleaning agent after cleaning, but check whether it is clean. If it is not clean, once it is started, it will bend the connecting rod forcibly, and then there will be insufficient power and white smoke. For specific vehicles that need "coal digging" cleaning, such as Audi EA888 and BMW's self-spraying series N20 and N54, walnut sand can be used for cleaning.