How to clean up the car carbon deposit? A simple way to clean up carbon deposits yourself.
1, don't be idle for a long time.
If the idle time is long, it will take longer for the engine to reach normal temperature, and the evaporation rate of gasoline sprayed on the back of the valve will be slow, and carbon deposition will occur. At the same time, often idling, the air flow into the engine is also small, so the scouring effect on carbon deposits becomes weak, which will promote the deposition of carbon deposits.
2. Pay attention to the timing of flameout
For cars with turbochargers, don't turn off the engine immediately after driving at high speed or climbing hills, and turn off the engine after idling for 10 minutes. The car with turbocharger deposits carbon several times faster than the ordinary naturally aspirated car.
It is suggested that car owners should clean the air intake system without disassembly every 20,000 ~ 40,000 kilometers under the condition of meeting routine maintenance, that is, without disassembling the engine, they should clean the air intake, valve, oil circuit and other parts of the vehicle that are prone to carbon deposition with special equipment and special methods.
Step 3 use clean gasoline
Impurities in gasoline are the main components of carbon deposition, so the carbon deposition tendency of high cleanliness gasoline is weak. However, it should be noted that high label does not mean high quality, and label only represents octane number of oil, not quality and cleanliness.
Commonly used methods are: disassembly and washing, bottle washing and fuel additives.
1, disassembly and cleaning
This method is very direct and rude, but it is usually sent to 4s stores. Disassembly of the engine is complicated. No matter what parts are disassembled every time, their performance will be more or less affected. Need to hire a professional master to disassemble. Dismantling and washing can directly see the carbon deposit in the engine, and the cleaning will be cleaner. But the cost will be higher and technology will be needed.
2, infusion bag or infusion bottle cleaning
This method is also quite common. When the cleaning agent is discharged into the air inlet, the carbon deposit is diluted and softened into slurry, and then burned and discharged from the cylinder. General cleaning objects include air intake, throttle valve, intake valve, oil nozzle, cylinder interior and so on. , but the effect is not as obvious as unpacking and washing.
3. Fuel additives
One reason for carbon deposition is that the fuel is not completely burned and adheres to various parts of the engine, and carbon deposition is formed over time. The main function of additives is to drill into the pores of carbon deposits with strong surface activity, destroy its structure, gradually dissolve these carbon deposits from the metal surface, then burn them with fuel at high temperature, and then discharge them through waste gas. Effective fuel additives, such as PNF stock solution, are non-corrosive, can clean the whole oil circuit, impurities in the oil tank, moisture in the oil tank, high-pressure oil pump, built-in gasoline filter element, nozzle, piston top, intake valve and exhaust valve, and will not block the three components, so the safety is relatively high.