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If you don't pay attention to the oil and driving habits for a long time, the wax and gum in the gasoline will accumulate thicker and thicker, and carbon deposits will be formed when it hardens after repeated heating. If the engine burns oil, or if the gasoline is of poor quality and has more impurities, the valve carbon deposits are more serious and form faster.
Carbon deposition is a kind of coke-like substance produced by unsaturated olefins and gum in the fuel at high temperature during the working process of the engine. Its hazards to the car are as follows:
1. It can reduce engine power and increase fuel consumption;
2. In serious cases, it will also cause engine knocking, acceleration noise, damage to the piston and crankshaft, and even eventually lead to the engine burning oil and need to be overhauled;
3. It can directly affect the exhaust emissions of the car, resulting in the inability to pass the annual inspection.
1. Long-term idling can easily lead to the formation of carbon deposits in automobiles.
When the car is idling, there is less air entering the engine, so that the air flow becomes smaller, which makes it easy for the car to form carbon deposits faster.
2. Use car cleaners to reduce the formation of carbon deposits in cars.
The formation of automobile carbon deposits is due to some impurities in gasoline, and if you use gasoline with a relatively high cleanliness, the formation of automobile carbon deposits will be less. If some car cleaners are used, they can activate the carbon deposits that form on the metal surface.
3. Clean the air intake system of the car regularly.
Doing some necessary cleaning for the car's air intake system is the most effective way to reduce the formation of carbon deposits, so the car owner should do some necessary cleaning for the car's air intake system.
Effective fuel additives can be used. 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.
Proper addition of fuel additives can indeed achieve the effect of cleaning the oil circuit, preventing carbon deposition, dissolving sediments such as sludge, gum, moisture and metal debris inside the engine, and can reduce the pollution of new engine oil, prolong the service life of the engine, the cost is not high, simple and easy to operate, effective fuel additives such as PNF stock solution is not corrosive, will not block the ternary, and the safety is relatively high.
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Carbon deposits are mainly caused by insufficient combustion of gasoline. Many people's way of dealing with it is to go to the 4S store for high-pressure cleaning, so that although it can also be cleaned, the resulting cost is also extremely high. Engine carbon deposits can first be flushed with high-grade gasoline, because the combustion of this gasoline is relatively sufficient, which can effectively clean up the carbon deposits.
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How can we exhaust the carbon deposits of the car?
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1.The whole machine cleans the cylinder.
In a general garage, the inside of the cylinder head can be cleaned and carbon deposits removed without disassembling the engine.
2.Use a fuel cleaner.
Fuel cleaners purchased at gas stations claim to remove impurities from the oil circuit, and also contain carbon deposits at the fuel injectors. There are also different theories about the effect of this approach and whether it will bring other consequences, and it is recommended that professional departments do corresponding experimental research.
3.Cleaning engine parts.
When overhauling an engine, you can use detergents, ultrasonics, etc. to remove carbon deposits on parts. The advantage is that the carbon deposits are cleaned completely and thoroughly, but the disadvantage is that the engine needs to be disassembled, which is labor-intensive and time-consuming, and may also cause problems due to negligence in the reassembly process. If you can't be sure that the engine has significant carbon deposits, don't do it lightly.
Driving the engine the right way and maintaining it regularly can reduce the formation of carbon deposits in the engine. Be sure to take care of your vehicle when driving, if you drive in a bad environment for a long time, it will only cause the scrapping period of the vehicle to be premature.
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The reason for carbon deposition: determined by the control characteristics of the electric injection engine, the cylinder is first injected and then ignited every time it works, and the ignition is cut off immediately when we extinguish the engine, but the gasoline sprayed out by this work cycle can not be **, after the unburned gasoline in the cylinder volatilizes, the remaining glue and wax will be deposited on the cylinder wall and valve, which can only be attached to the intake valve and the combustion chamber wall. The method of removing carbon deposits, one is that the carbon deposits are not too serious, and the non-dismantling cleaning method is adopted, "The method is simple and labor-saving, and it only needs to be used in the correct way."
However, for engines with serious carbon deposits, this method is inadequate and cannot achieve the purpose of complete cleaning. After the disassembly and cleaning, if the engine performance is still bad, then you should pay attention to it, it may be caused by too much carbon deposits in the valve and cylinder, then you have to use the method of disassembling the engine to solve it. Valve carbon deposits can be easily cleaned by removing the intake manifold and soaking it by hand or with cleaning chemicals.
As for the cleaning of carbon deposits in the engine cylinder, it is necessary to "make a big move" and remove the cylinder head and timing belt before cleaning. However, you should still pay attention to the cleaning process. Car carbon deposition cleaning is a very important work, it is generally not recommended to operate by yourself, do a good job of going to the relevant professional place for cleaning, cleaning links are very important, in fact, daily maintenance is also very critical, to minimize the formation of carbon deposition can effectively protect the engine, you not only have to cultivate good driving habits, try not to shift gears at low speed, in this case gasoline combustion will occur inadequate, easy to produce carbon deposits.
Regular cleaning and maintenance is also important.
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Generally, 4S stores have professional cleaning equipment and cleaning agents, if you have to save money, you can go to the gas station to refuel at the same time to buy two bottles of gasoline additives, add to the fuel tank, also have a certain effect, but if the carbon deposit is too much, it is difficult to clean it with this method, it is best to go to the 4S shop to check and clean, if it is particularly serious (just if) you need to disassemble the cylinder head for manual cleaning, this method is the most thorough.
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Others don't know very well, I use the Youdao cylinder carbon remover, the cleaning effect is very good, it seems that many car supply stores use this.
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The main reasons for the formation of carbon deposits are as follows.
First, the vehicle travel time is short, no more than 30 kilometers per day, and the driving speed is low, second, the gasoline mark used is too low, the combustion performance is not good, third, the engine valve oil seal, piston ring sealing effect is poor, and the phenomenon of burning engine oil occurs, on the one hand, because of the crankcase forced ventilation system, which is not suitable for the installation of oil and gas separator, resulting in the burning of engine oil.
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Generally speaking, there are several ways to remove carbon deposits that we commonly use:
1. Hang the bottle, cut off the fuel supply, connect the carbon deposition cleaning agent to the engine fuel injector, and use the cleaning agent to soften the carbon deposition in the engine and be burned out, but this method is only suitable for slight carbon deposition, and it does not make much sense for those vehicles with serious carbon deposition.
2. Disassemble the engine intake branch pipe for cleaning, remove the engine intake branch pipe, and then scrape the stubborn carbon deposit, clean and reload the car, this effect is the best and the most obvious. The cost is not much different from that of hanging bottles.
3. Running long distances or high speeds, the vehicle will hardly produce any carbon adsorption in the hot car state, and at the same time, the high-speed engine can discharge a part of the carbon deposits, which is why the high-speed car is often run, fuel-saving and easy to drive.
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Carbon deposition is the product of fuel or lubricating oil formed under the action of high temperature and oxygen, and carbon deposition will inevitably occur during the driving process of the car, especially bad driving habits or frequent low-speed driving. If carbon deposits are not cleaned up in time, it can easily lead to problems such as difficult engine starting, unstable idling, decreased power and increased fuel consumption.
Before the advent of various types of cleaning agents, the only way to clean up carbon deposits was to disassemble the engine, but it was time-consuming, laborious and costly, and the engine was disassembled and then cleaned with auxiliary tools. However, today's engine manufacturing is becoming more and more sophisticated, and there are many follow-up problems caused by disassembly. Therefore, when all kinds of cleaners came out, the process of cleaning up engine carbon deposits was greatly simplified, and there are two main ways to clean up carbon deposits on the market.
Combustion chamber cleaner.
Disassemble the spark plugs of each cylinder, inject the combustion chamber cleaner into the cylinder from the spark plug hole until the detergent foam benefit orifice, soak the detergent in the cylinder for 15-20 minutes, and after the cleaning agent and dissolved matter and carbon deposits inside the cylinder are extracted through special equipment, use a high-pressure air gun to blow out the water in the combustion chamber, and it is best to start the engine and use a high-pressure air gun to blow the water thoroughly again.
Then install the spark plug homing in turn, start the engine, and keep the neutral speed above 1500 rpm for 2-5 minutes, so as to completely complete the cleaning of dissolved matter and carbon deposits in the throttle and combustion chamber. The combustion chamber cleaner also has the function of cleaning the intake valves, and the combustion chamber and the intake and exhaust valves can be cleaned to the extent that they have a metallic original color.
This is currently the best method to use detergent to clean up carbon deposits, but because the effect is too good, the carbon deposits that are cleaned out will be stuck in a large number of near the intake and exhaust valve seats, so that the intake and exhaust valves can not be closed, so it takes a lot of time and energy to deal with it, and the oil will also encounter the dilution of the combustion chamber cleaner, and the oil must also be replaced after cleaning the combustion chamber.
In addition, now there is dry ice for cleaning carbon deposits in the combustion chamber, I experienced it once in the BMW 4S store, ** is 2980 yuan, which is more expensive. Mainly through the principle of thermal expansion and cold contraction, the dry ice particles are injected into the combustion chamber by high-pressure gas, and the carbon deposits are quickly separated and embrittled by the temperature difference between the two.
Gasoline additives.
There are many brands and types of gasoline additives, including fuel injector cleaners, throttle cleaners, fuel treasures, etc., all of which add gasoline additives to the fuel tank, so that the whole tank of gasoline becomes a mild detergent, and promote the combustion of harmful substances such as gum and carbon deposits in gasoline through clean activation factors, and clean up carbon deposits while the car is driving, as long as the gasoline passes through the place, it can be cleaned up.
Gasoline additives are injected before each refueling, and by injecting gasoline additives several times in a row, the carbon deposits on the exhaust pipe will be significantly reduced, and the filter, exhaust valve, and fuel system can be cleaned to a certain extent. This method of cleaning up carbon deposits does not cause damage to oxygen sensors and catalytic converters. However, this method will not have an immediate effect, and the speed of carbon removal will be relatively slow, so it is important to stick to it.
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I don't know if you have such an experience, that is, the vehicle will have insufficient power and increased fuel consumption after driving for a period of time. In fact, I mentioned this situation a long time ago, and it is caused by carbon deposits in the car engine. The average driver's way of dealing with carbon deposits may be to run at high speeds.
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Teach you a small method, clean up and not hurt the car, high-pressure cleaning of the engine cylinder, change the oil after cleaning, if not cleaned in time, it may waste oil, and the life of the engine is not long!
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To quickly remove carbon deposits from the car engine, I recommend disassembling the engine intake branch pipe for cleaning, removing the engine intake branch pipe, and then scraping the stubborn carbon deposit, cleaning and reloading the car, this effect is the best.
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How to quickly remove the carbon deposits in the automobile engine, cut off the fuel supply, connect the carbon deposition cleaning agent to the engine fuel injector, and the cleaning agent will soften the carbon deposition in the engine and be burned out, but this method is only suitable for slight carbon deposition, and it does not make much sense for those vehicles with serious carbon deposition. Go to the gas station and other places to buy and use fuel additives.
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The excessive carbon deposition of the automobile engine has a serious impact on the power of the engine, and it also competes for the amount of fuel used in the engine, so it is best to remove the carbon deposition or disassemble the intake pipe, and it is best to clean it with carbon deposition.
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There are only two ways to remove carbon deposits in the maintenance plant, one is to use the disassembly-free cleaning method when the carbon deposits are not serious, and clean them by adding a special cleaning agent liquid. Second, if the carbon deposition is serious, the method of removing the cylinder head to clean the valve and cylinder block should be adopted.
Good driving habits can reduce carbon deposits to a certain extent, 1. Use clean fuel that meets the label; 2. Cultivate good driving habits, and the hand wave shift should be above 2000 rpm; 3. Regularly pull the high-speed to let the engine run at high speed to remove slight carbon deposits.
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<> "How to remove carbon deposits in automobile engines.
For some cars, there is often a situation of engine carbon deposition due to gasoline cleanliness and other reasons, so how to remove carbon deposition in the automobile engine?
There are three ways to remove carbon deposits from a car engine:
Additive cleaning: additive cleaning is to fill the cleaning agent directly into the fuel tank and mix with the fuel, after the vehicle starts, the cleaning agent will enter the combustion chamber with the fuel, and at the same time as the Qingkai Huchang lotion enters the combustion chamber, it will clean the carbon deposits inside the engine to a certain extent.
Hanging bottle cleaning: hanging bottle cleaning is also non-dismantling cleaning, this method is to suck the cleaning agent into the engine combustion chamber from the engine inlet pipe in the form of hanging bottles, along with the intake air flow, and in this process, the cleaning agent will clean the carbon deposits in the engine intake tract and combustion chamber.
Disassembly and cleaning: Disassembly and cleaning is to disassemble and clean the parts of the engine that have carbon deposits. Although this method has the best cleaning effect, due to the large amount of work, time-consuming and labor-intensive to make silver, the general car repair shop is unwilling to provide disassembly and cleaning services.
Carbon deposits. Causes: the decision of the control characteristics of the electric injection engine, the cylinder is first injected and then ignited every time it works, when we extinguish the engine, the ignition is cut off immediately, but the gasoline sprayed out by the working cycle can not be **, after the volatilization of the unburned gasoline in the cylinder, the remaining glue and wax will be deposited on the cylinder wall and the valve, which can only be attached to the intake valve and the combustion chamber wall. >>>More
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The engine clattered and repaired? What is the fault of the car engine, the auto mechanic is experienced and answers the doubts.
There are several reasons for engine shake:
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