My car has run more than 20 thousand kilometers. Should I clean up the carbon deposits? What do you use to clean?

If the vehicle is used in urban areas for a long time, it is recommended to clean the fuel injector and air intake every 20,000 km and the electronic throttle body every 654.38+00,000 km. If the vehicle has very good road conditions and drives at high speed for a long time, the cleaning cycle can be extended.

Diagnostic methods of carbon deposition:

First, you can clearly see the degree of carbon deposition by removing the throttle.

Second, disassembly method: that is, disassemble the engine and check whether there is carbon deposit. This is intuitive, but time-consuming and laborious, and every time any part is disassembled, its performance will be affected more or less and its service life will be shortened.

Endoscopy: Remove the spark plug or fuel nozzle, and observe the degree of carbon deposition in the valve with an endoscope. This method is very convenient, but the cost of endoscope is not small, and it is not widely used in maintenance, so not all maintenance enterprises are equipped with this equipment.

Removing carbon deposits in these cars can achieve the purpose of cleaning up carbon deposits in cars by the following methods, thus making the life of cars longer.

1. Always maintain and clean carbon-prone parts.

Second, try to use high-grade gasoline, because the tendency of carbon deposition in gasoline with high cleanliness is relatively small, the octane number of high-grade gasoline is relatively higher than that of low-grade gasoline, and the combustion is complete and clean, so the possibility of carbon deposition is relatively low.

Third, you can use some gasoline additives with good brand reputation, perfect after-sales service or designated by automobile manufacturers.

Fourth, increasing speed, shifting gears and driving at high speed is actually using a large amount of intake air to wash the air intake, prevent and reduce the deposition of carbon deposits and improve the power of the car. It is generally recommended that the shift speed be between 2500 rpm and 3000 rpm.

Five, often idling exercise, easy to form carbon deposits, and insufficient air intake will cause and promote the deposition of carbon deposits. For turbocharged engines, the possibility of carbon deposition is higher than that of ordinary naturally aspirated vehicles, so be careful not to stop the engine immediately after high-speed driving or climbing, and idle for about 10 minutes to avoid carbon deposition.