How to judge whether there is carbon deposit in the car?

How to judge whether there is carbon deposit in the car? Hello, you can see if the throttle is dirty, you can see it by removing the intake pipe, and there is too much carbon deposit in the case of unstable idle speed and easy flameout at low speed. I hope I can help you, welcome to ask, and the owner wishes you a happy ride. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.

How to judge whether the carbon deposition of automobile engine is serious 1? The whole exhaust pipe is black. Wipe it with a paper towel. There is a lot of water (oil) and black oil on it. This situation is the most serious, which proves that the engine has appeared serious carbon deposition and serious oil burning. A large number of unburned gasoline mixed exhaust gas and a large number of carbon deposits in the cylinder ran out of the exhaust valve and gathered in the entire exhaust pipe. In this case, it is best to go to the repair shop to remove carbon deposits and check fuel consumption.

2. Black pollutants are deposited under the exhaust pipe. Wipe with a paper towel, showing dry black carbonaceous material. This is the phenomenon of most cars that are in good condition and have been used for many years. This situation is not carbon deposition, but after a long period of driving, a small amount of gasoline that has not been completely burned by the engine becomes carbon in the exhaust pipe under the action of gravity and accumulates under the exhaust pipe. This situation proves that the engine has slight incomplete combustion and slight carbon deposition (classic car). This is not a fault and does not affect daily driving. If you can, you can go to the repair shop to clean the engine.

3. The whole exhaust pipe has a small amount of khaki dry pollutants. This is a normal phenomenon in most cars. When the engine is running, there will be some slight incomplete combustion. These gasoline will burn in the exhaust pipe (don't be afraid, it won't burn, the amount of gasoline is too small, and the combustion is only enough to directly carbonize gasoline) and then stay in the exhaust pipe. This situation does not need any treatment, and the engine is normal.

4. There is almost no pollutant in the whole exhaust pipe, and it is very clean to touch the exhaust pipe by hand. Congratulations, when you see this situation, it proves that the engine of your car is in very good condition, basically in the new car factory stage, and the engine has no incomplete combustion and no minor problems that affect the engine efficiency. This kind of engine is in excellent condition, please continue to maintain it normally.

How to judge whether there is carbon deposit in the car? The detection of engine carbon deposit is difficult to grasp, professional and uncertain, mainly in the following ways. 1) disassembly method is relatively direct, but it costs labor and money, and the assembly accuracy of modern cars is very high. Disassembly will damage the efficiency of the engine, so this method is generally not used except in the case of serious carbon pollution. 2) Phenomenal Analysis According to the appearance of engine performance degradation, it needs experienced maintenance personnel to analyze the location and degree of carbon pollution. 3) Dismantle the spark plug and fuel injector with an endoscope, and observe the carbon deposition in the intake pipe and combustion chamber with an endoscope, but it may still cause damage to the parts during disassembly and assembly. 4) Computer detection method (1) Use a computer to detect the voltage of the oxygen sensor. Under normal circumstances, the working voltage of the oxygen sensor should change between 0.3-0.7V If the range of voltage change increases (for example, to 0.2—.0.8V), it indicates carbon deposition pollution. The greater the voltage change, the more serious the carbon pollution. This method can only be applied to closed-loop controlled cars. (2) Check the electronic throttle opening. Under normal circumstances, the throttle opening at idle speed should be 1-2 degrees. If the throttle opening is above 3 degrees when idling at room temperature, it means there is carbon pollution. (3) Check the drift of CO and HC in tail gas emission. Under normal circumstances, when the throttle changes, the emissions of CO and HC should be relatively stable. If the drift is large, it means that the three-way catalyst has carbon pollution.

How to judge vehicle carbon deposit 1? Carbon deposition in combustion chamber 2. The piston ring was stuck by carbon deposit, which caused the hanging oil to drop by 3. Corrosion and aging of valve oil seal 4. There is a gap between the piston and the steel wall 5. The waste gas valve is damaged 6. The intake valve is faulty.

A very important reason for the combustion of automobile engine oil is carbon deposition, which will lead to insufficient combustion of gasoline, form a large amount of carbon deposition, jam the piston ring, lead to more serious combustion of engine oil, and also lead to scratches on the steel wall, so that the mixed gas will enter the engine oil tank, destroy the quality of engine oil, and form a large number of sludge and exhaust gas. The waste gas passes through the waste gas valve, and the waste gas valve fails after a long time. Carbon deposition is the culprit of burning engine oil (choosing good quality gasoline and engine oil can effectively avoid the problem of burning engine oil)

Engine oil itself is consumed to some extent, and excessive consumption is the problem of burning engine oil. There are many factors that affect engine oil combustion, such as fuel quality, road conditions, driving habits and maintenance habits. The above reasons will aggravate oil consumption, lead to oil combustion, and lead to the emergence of vehicles:

1, carbon deposit appears in the combustion chamber, which makes the piston ring gas ring stuck and causes poor sealing.

2. The lubricating system produces sludge, which blocks the oil return hole and weakens the oil scraping efficiency.

3. Wear occurs between the piston and the cylinder wall.

4. The valve seal is corroded and aged, and the seal is invalid.

In addition, there is a crankcase ventilation system (waste gas valve) on the car now, and if there is a problem, it will also increase the oil consumption. With the development of science and technology, the problem of burning engine oil can be solved without disassembly or repair. With the development of science and technology, the problem of burning engine oil can be solved without disassembly or repair.

How to judge whether a car burns engine oil? Vehicles burning engine oil will have different degrees of "blue smoke" symptoms, and the consumption of engine oil will increase significantly, so they have to replenish engine oil in a short time. Automobile burning engine oil will lead to the increase of carbon deposition in combustion chamber, the decline of automobile economy and power, and the excessive exhaust emission.

Auto repair experts introduced three methods to judge engine oil burning, which are simple and effective. You might as well have a try.

One is that there was a thick blue smoke in the exhaust pipe when I just stopped in the morning. After a while, the blue smoke disappeared, and it may not happen again that day, but it appeared again the next morning and the third morning, indicating that the vehicle had burned engine oil. This phenomenon is called cooling the car and burning engine oil.

The second method is that when the vehicle is driving or parked in the same place, the driver slams on the accelerator and a large amount of blue smoke comes out from the exhaust pipe, which shows that the phenomenon of burning engine oil in the car has become more serious. This phenomenon is called accelerated combustion of engine oil.

The third method is that in addition to the blue smoke from the exhaust pipe, you can also see the pulsating blue smoke from the oil filler. In this case, the engine damage has been very serious.

This is an identification method visible to the naked eye. More scientifically, it is the most scientific and accurate method to detect the remaining amount of engine oil after driving to a certain mileage and judge it with the support of data.

How to judge whether there is carbon deposit in the car and how to clean it up? If there is too much carbon deposit on the throttle, the fuel door will idle unsteadily, and the spark plug will have too much carbon deposit, so it is not easy to ignite the fuel door. Thank you.

How to judge whether a car should change its tires? Generally, there are 2-4 triangular marks on the tire sidewall, and the long sharp angle of the triangle faces the outside of the tire axis. When the tire is worn to the sharp corner of the triangle, it must be replaced. If the wear is unbalanced, it may be necessary to replace the tire in advance. At least in pairs when changing tires.

It's best not to change the tires yourself. After all, because of design safety problems, it is recommended to go to the repair shop to change it.

How to judge whether a car is driving straight on a flat road? When driving, the car can travel in a straight line even if both hands loosen the steering wheel. If a car can't drive in a straight line, it always leans to one side. It is likely that the road surface is inclined, or the steering mechanism or suspension is faulty. In order to find out the cause of the fault, we should choose a flat road for driving test. Don't choose narrow streets at this time. On a narrow street, there is only one lane on both sides. Because the road section is circular, the middle is high and the sides are low, it is difficult to make an accurate judgment on the detection results. For this reason, you can choose a wide street, which is relatively flat, and you can rule out the factors of street inclination. In this way, as long as you drive the car in a straight line, you can immediately judge whether there is a mechanical failure. Of course, during the test, the tire pressure must be kept at the specified value. If the car still can't drive in a straight line on a flat road, and the steering wheel always leans to one side, it feels wobbly and unstable, then the car must be out of order. Therefore, the steering mechanism should be comprehensively inspected around the toe-in of the steering wheel. Don't continue to use it at this time, so as not to cause a big accident. (news)

How to judge whether the automobile air conditioner is short of fluorine? 1. When the air conditioner runs continuously, there is no bubble in the glass hole. There will be short bubbles when the air conditioner stops, indicating that the fluorine content is normal.

Second, when the air conditioner runs normally and continuously, there are bubbles in the glass hole, indicating that the fluorine content is insufficient and needs to be added.

Thirdly, when the air conditioner runs normally and continuously, there is no air bubble in the glass hole, and when the air conditioner stops, there is no short-term air bubble, which indicates that there is too much fluorine and it needs to be discharged.

If the owner doesn't find this glass observation hole, there is a simple way to roughly judge: open the hood of the car and check whether there is oil pollution in the air conditioning system connector. If there is, it should be fluorine deficiency. Before fluoridation of automobile air conditioning, it is necessary to conduct a comprehensive inspection of the air conditioning system of the vehicle to ensure that there is no leakage point of the air conditioning device before fluoridation.