How many kilometers do you need to clean up the carbon deposit in car cleaning?

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.