Is the cleaning agent sprayed online to clean the carbon deposit in the engine good? Bad for the engine? I think their comments are quite good. here

Carbon deposit is a kind of colloidal carbon that collects on engine parts such as valve, intake branch pipe and fuel nozzle. When the engine is working, some components in gasoline will condense into colloidal carbon, and the condensed colloidal carbon will accumulate continuously, which will affect the normal work of the engine precision management system.

How to prevent carbon deposition

1, fill with high-quality gasoline

Impurities such as wax and colloid in gasoline are the main components of carbon deposition, so the carbon deposition trend of high cleanliness gasoline is weak. In order to ensure the cleanliness of gasoline, some car owners will adopt the practice of adding gasoline detergent to gasoline. This can effectively prevent the formation of carbon layer on metal surface, and gradually activate the original carbon particles to be removed slowly, thus protecting the engine from damage. However, the addition of gasoline detergent must be cautious. If counterfeit and shoddy products are added, it will have the opposite effect.

2. Don't be idle for a long time.

The longer the idle time, the longer it takes for the engine to reach normal temperature, the slower the evaporation rate of gasoline sprayed on the back of the valve, and the carbon deposition will also 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.

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.