What are the carbon deposits in Audi A4L? Is there any way to remove carbon deposits?

Influence of excessive carbon deposition in combustion chamber;

1, the engine combustion chamber is the worst working environment of the automobile, and it is in a state of high temperature and high pressure for a long time. Inevitably, carbon deposition will also occur here, mainly due to the high temperature cracking of incompletely burned fuel. The carbon particles here are hard and brittle, and when they are serious, they are honeycomb-shaped and have a certain thickness;

2. The carbon deposit here will affect the intake vortex, hinder the flame propagation speed, and lead to the power reduction. In severe cases, it will lead to engine knocking (commonly known as cylinder explosion), and even excessive pressure will lead to combustion chamber rupture;

3. Slight carbon deposition has little to do with it, but the carbon deposition in the combustion chamber is a slow to fast accumulation process, so daily cleaning is very important.

4. It is difficult to start the vehicle in winter, and the engine shakes after starting, which even leads to the failure of the engine to start; There will be weak vehicle acceleration; Hot car idling jitter; The phenomenon of increasing oil consumption; Every carbon deposit in the engine will have an adverse effect on the normal operation of the engine, and in severe cases, it will cause irreversible damage to the engine piston.

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.