How to clean up engine carbon deposit?

The so-called start-up cleaning is actually cleaning the lubrication system and carbon deposit inside the engine. Because the engine works under high temperature and high pressure for a long time, sludge and carbon deposit will reduce the efficiency of the engine, which is very necessary for old cars with a certain age. At present, most of the lubricating oil used in automobiles has its own cleaning function, but in order to ensure the normal operation of the engine, it is necessary to clean the lubricating system, air intake and combustion chamber. Cleaning the throttle valve: remove the engine decorative cover, remove the throttle valve, clean it with carburetor cleaner, dry it with cotton cloth and install it. Clean up the carbon deposit inside the engine: open the engine oil cover, pour in the whole tank of cleaning agent (mixed with the old engine oil), cover the engine oil cover, and turn off the engine after the ignition idling 10 minutes. Clean the carbon deposit inside the engine. This cleaner can dissolve the deposits such as sludge, colloid, moisture and metal debris inside the engine, reduce the pollution of new engine oil and prolong the service life of the engine. Cleaning oil circuit carbon deposit: Cleaning oil circuit carbon deposit includes cleaning oil nozzle, combustion chamber, spark plug, throttle and other parts. The purpose is to solve the problems of insufficient horsepower, oil consumption, wheezing, poor acceleration or difficult start-up caused by carbon deposit, colloid and dirt in the oil system.