What are the carbon deposition phenomena of the Audi A4L? What can be done to remove carbon deposits

Effects of excessive carbon deposition in the combustion chamber:

1. The engine combustion chamber is the worst place in the working environment of the car, which is under high temperature and high pressure for a long time. Inevitably, carbon deposits also occur here, mainly from the pyrolysis of incompletely burned fuel. The carbon particles here are hard and pot-shaped, and in severe cases, they are honeycomb and have a certain thickness;

2. The carbon deposition here will affect the intake vortex, hinder the rate of flame propagation, and lead to a decrease in power, which will lead to engine knocking (commonly known as cylinder knocking), and even excessive pressure leading to combustion chamber breakdown;

3. Slight carbon deposition does not matter much, but carbon deposition in the combustion chamber is an accumulation process from slow to fast, so daily cleaning is very important.

4. It is difficult to start the vehicle in winter, and the engine shakes after starting, and even causes the engine not to start; There will be a lack of acceleration of the vehicle; Idle shaking of hot cars; the phenomenon of increased oil consumption; Every carbon deposit inside the engine will have a bad impact on the normal operation of the engine, and in severe cases, it will cause irreversible damage to the engine piston.

The commonly used methods are: dismantling and washing, hanging bottle cleaning, and fuel additives.

1. Dismantle and wash. This method is very direct and rude, but it is generally sent to the 4S store for disassembly, the disassembly of the engine is more complicated, no matter what parts will affect its performance more or less every time it is disassembled, you need to ask a professional master to disassemble. The carbon deposits in the engine can be seen directly when dismantled and washed, and the cleaning will be relatively clean.

However, the cost will be relatively high, and it will also require technology.

2. Hanging bottle cleaning.

This method is also relatively common, the hanging bottle is to discharge the cleaning agent into the air intake, dilute and soften the carbon deposit to turn it into a slurry, and then burn it from the cylinder to discharge. Generally, the cleaning objects include the intake tract, throttle, intake valve, fuel injector, cylinder inside, etc., but the effect is not as direct and obvious as dismantling and washing.

3. Fuel additives.

One of the causes of carbon deposition is that the fuel burns insufficiently, which adheres to various parts of the engine and forms carbon deposits over time. The main function of additives is to drill into the pores of carbon deposits with the help of strong surface activity, destroy their structure, and gradually dissolve these carbon particles from the metal surface, and then discharge them through exhaust gas after burning with fuel at high temperatures. Effective fuel additives such as PNF stock solution are not corrosive, can clean the whole oil circuit, fuel tank impurities, fuel tank moisture, high-pressure oil pump, built-in gasoline filter, fuel injector, piston top, intake valve, exhaust valve, will not clog ternary, and the safety is relatively high.

There are several phenomena in judging carbon deposits:

Let's first understand the causes of the formation of carbon deposits:1The oil is not good 2. There are many road conditions in the city 3. Natural formation of fuel combustion 4. Air quality, etc.

Huasheng maintenance summary of several ways to prevent carbon deposit: 1. Frequently run at high speed, or high-speed pull-up 2. Add fuel additives and insist on regular use.

The root cause of burning engine oil is that the fuel quality and oil quality are too poor. Fuel difference, these carbon deposits are deposited in the piston, which affects the elastic tension of the piston ring outward, causing cylinder pressure to decline; If it is deposited in the engine, it will cause poor lubrication, increased wear, increased fuel consumption, decreased power, and cause oil burning. Oil circuit cleaning recommended Si Youpu;

Tool raw material: high-quality fuel.

1. Carbon deposition and its causes.

The carbon deposition of automobiles is mainly due to the insufficient combustion of fuel inside the engine, and many unsaturated olefins and gum components in gasoline will cause accumulated residues in fuel injectors, throttle valves, oil pipelines, spark plugs and other components, and form black solid carbon deposits in the state of high temperature of the engine. Generally, there are two main types: valve combustion chamber carbon deposition and intake pipe carbon deposition.

Second, the real ways to reduce and clean up carbon deposits are as follows:

1. Try to avoid developing bad driving habits such as long-term idling and low-speed driving, and long-term hot driving.

3. Don't deliberately develop the habit of shifting gears at low rpm in order to save fuel.

4. During maintenance, about every 20,000 kilometers or so, do a throttle cleaning, and if possible, you can do some endoscopy and other items.

Precautions: The engine-related carbon part is disassembled and cleaned, but this method is easy to lead to the sealing level is not as good as the original factory, spending thousands of yuan, but the performance of the car is reduced, it is really picking up sesame seeds, losing watermelon. However, in case it really comes to the point where it can't be solved without dismantling, please try to go to a 4S store or a qualified unmanufactured construction.

Summary. Hello, boss, Audi's 220,000 kilometers of cleaning carbon must be cleaned. After cleaning, there is no damage to the engine. And it will also increase the power protection of the engine.

Can Audi's 220,000 km clean up carbon deposits? After cleaning, can the engine be damaged?

Hello, happy to answer your questions.

Hello, boss, Audi's 220,000 kilometers of cleaning carbon must be cleaned. After cleaning, there is no damage to the engine. And it will also increase the power protection of the engine.

It's okay for the gearbox to lift the clutch slowly, but it's a quick setback, do you need to change the oil?

How much does it cost to clean the charcoal deposit.

Cleaning charcoal is not expensive, but it is said that labor is expensive, about two or three thousand yuan. If you get frustrated with speeding up, it is recommended to change the transmission fluid and try again.

I asked a few stores, and it is not recommended to change. Said that the gearbox was slippery. It's not good.

Why is it not recommended to change the dual-clutch transmission fluid? If you don't replace it, then the cost of overhauling the gearbox is not higher.

The car is 18 years old Audi A6 <>

Can it be changed? 2003 Audi.

18 years? It's still forgotten, it's not necessary, it's basically scrapped. Don't waste money, I guess you'll have to overhaul the gearbox.

If you've changed it before, don't use it.

1. Audi carbon deposits are generally cleaned once every 1 to 20,000 kilometers.

2. Clean the throttle: remove the engine cover, remove the throttle, clean it with carburetor cleaner, dry it with a cotton cloth and install it. Cleaning the throttle valve basically every time we go to the 4S shop, the maintenance staff will suggest us to do this.

Under normal circumstances, the cleaning cycle of the throttle is 20,000 kilometers, and the charges of 4S stores are also very different according to the brand and the model's front gear, ranging from 200 yuan to 800 yuan.

3. In fact, we can DIY clean the throttle by ourselves, which can save this big cost. Because the process of cleaning the throttle is very simple and the cost is extremely low, you only need to buy a bottle of carburetor cleaner, which can be done for 10 yuan. If you don't usually have time, you can find an auto parts city or roadside stall and give him 30-50 yuan, I believe there will be many people rushing to do it.

4. Clean the carbon deposits inside the engine: open the oil cap, pour the whole tank of detergent (mixed with the old engine oil), cover the oil cap, and turn off the ignition after idling for 10 minutes. Cleaning the carbon deposits inside the engine, the detergent dissolves the sludge, gum, moisture and metal debris and other messy deposits inside the engine, and can reduce the pollution of new engine oil and prolong the service life of the engine.

5. Its cleaning cycle is generally judged to be 30,000 kilometers once, and the cleaning method for carbon deposits inside the engine is also very simple, only need to add a bottle of engine internal cleaning agent in the oil port before maintenance, and idle for about 10 minutes, and then immediately maintain and replace the oil filter, and the owner can buy the engine cleaning agent online. At present, the mainstream cleaning agent on the market** is about 100 yuan, which can also save you a lot of expenses.

6. Clean the carbon deposit in the oil circuit: before refueling, add the whole bottle of fuel additives to the fuel tank. Generally, a bottle of fuel additives is used for 50-80 liter fuel tanks. Cleaning the carbon deposits in the oil circuit includes cleaning the fuel injector, combustion chamber, spark plug, throttle valve and other parts.

7. The purpose is to solve the incurable diseases such as insufficient horsepower, fuel consumption, wheezing, poor acceleration or difficulty in starting caused by carbon, gum and dirt in the oil circuit system. Cleaning these does not require any disassembly, as long as the car tank is regularly added with special cleaning fuel additives can achieve a good cleaning effect.

8. General fuel additives are divided into three types: cleaning type, maintenance type and increasing octane number, please do not choose wrong, buy according to your actual situation, and choose a well-known brand of large e-commerce. It is recommended to add one every 3000 km.

If you often drive at high speed with leakage, you can clean it up every 3 to 40,000 kilometers. If you often drive in traffic jams or idle a lot, it is recommended to clean up every 2 to 30,000 kilometers. Running at high speeds often prevents carbon deposits by taking advantage of the scouring effect of air currents on the air intake.

In the process of daily use, try to avoid idling for a long time. The longer the idle time, the longer the engine reaches normal temperature, and the slower the rate of evaporation of gasoline when it is injected into the back of the valve, which creates carbon deposits. At the same time, if you often idle and drive, the flow rate of empty air entering the engine will be small, so that the scouring effect on carbon deposits will also be weak, which will promote the deposition of carbon deposits.

Try to use high-grade gasoline, because the tendency of carbon deposits in clean gasoline is relatively small. Gasoline with high grades is relatively low and has a high octane rating, burns completely and cleanly, and has a much lower chance of forming carbon deposits, and some gasoline additives specified by car manufacturers can be used.

In fact, increasing the speed shift and high-speed driving are actually using a large amount of air intake to scour the intake tract to prevent and reduce the deposition of carbon deposits and improve the dynamics of the car, and it is generally recommended that the shift speed is 2500 to 3000 rpm. (Photo by Wu Binbin) @2019

1. If there is a lot of carbon deposit, it is normal for the fuel consumption to increase after cleaning the carbon deposit. Because the car's driving computer has the function of automatic adjustment and automatic adaptation. If there is more carbon on the original fuel injector, the fuel injection hole will be partially blocked, and the fuel injection amount of the fuel injection nozzle will be reduced;

2. At this time, the driving computer will play its function, and the general driving computer will increase the fuel injection time, so that the fuel injection volume of the fuel injector will increase. However, the adjustment of the computer is limited after all, and when it is adjusted to the maximum extent, it will no longer be adjusted, and there will be a failure at this time;

3. After the carbon deposit is cleaned off at this time, the pores of the fuel injector will become larger and the amount of fuel injected will increase. However, the adjustment of the fuel injection time by the driving computer is a gradual change process, so the amount of fuel injected at this time will be more than before;

4. At this time, there will be insufficient combustion in the combustion chamber, and part of the fuel will be discharged, resulting in increased fuel consumption. If you drive for a period of time, the fuel consumption will slowly decrease after the trip computer adjusts.