Volkswagen burns engine oil, how to tell where it burns, exhaust valve, turbocharger?

There are four types of engine oil burning;

1. The EGR valve is damaged, and the oil exhaust gas of the engine enters the combustion chamber, causing the oil to burn. Judgment method: Remove the air intake pipe and check whether there is obvious oil stain near the EGR valve. Solution: Repair or replace the EGR valve.

2. The gap between the engine valve and the valve guide is too large or the valve oil seal is aging and the seal is not tight, so that the oil enters the combustion chamber from the valve position, resulting in oil burning. Inspection method: Open the oil filler cap to check whether there is blue gas spraying, if there is air leakage; None good.

Solution: Replace valves, valve seals, valve guides, etc.

3. The engine cylinder head gasket burns through, causing the oil to leak into the combustion chamber from the oil channel, thereby burning the oil. Judging method: remove the spark plug and check the cylinder pressure, if the air pressure of the adjacent two cylinders is similar and the air pressure is lower than the standard value, there is a cylinder string, which may cause oil leakage.

Solution: Replace the head gasket.

4. The gap between the piston, piston ring and the cylinder wall is too large, causing the oil to enter the combustion chamber for combustion. Judgment method: pull out the oil dipstick and observe whether there is a blue gas spray at the mouth of the oil dipstick.

Yes, burn the engine oil; None, do not burn engine oil. Solution: Engine repair, replacement of pistons, piston rings, cylinder liners, etc.

Volkswagen burns engine oil, how to judge whether it is **burned, exhaust valve, turbocharged?

the formation process of burning engine oil in automobiles;

Step 1. The long-term unclean oil circuit of the car leads to the increase of gum impurities and moisture in the oil circuit, and the carbon deposit exceeds the standard due to poor combustion.

Step 2. Excessive carbon deposition leads to a significant decrease in engine condition and greater carbon deposition, and eventually piston ring stagnation and related parts aging.

Step 3. Slight oil burns begin to appear.

Step 4. Because burning engine oil produces greater carbon deposits.

Step 6. The trunk went from having one liter of oil ready to being ready for two or three liters of oil at any time.

Step 7. The overhaul was too expensive, and it was delayed, until in the end, the engine was overhauled with a burst cylinder.

How often does burning oil occur

There is no warning of burning engine oil, and it is said that it will burn, and the illness will come like a mountain. Moreover, the new car has not burned engine oil for tens of thousands of kilometers, and once it starts to burn engine oil, it will become very serious in half a year and half a year. I don't think you want to go through such a process, but it has happened that the engine has been revitalized by oil, and it has become a serious oil burn, so it is recommended to check it first, and don't rush to deal with the engine problem blindly.

Burning engine oil will lead to shaking, weakness, high fuel consumption and other possible phenomena, these are caused by burning engine oil, don't be in a hurry to deal with small phenomena, first deal with the problem of burning engine oil on the main line.

High temperature stuck piston rings

In fact, the treatment principle of piston ring stagnation should start from the oil circuit, the reason for the stagnation is the beginning of the oil circuit, the oil bearing temperature is 110 degrees, and the high temperature caused by the long-term unclean oil circuit makes the oil at a temperature of 120 degrees or higher for a long time, so that the oil will be exhausted in advance, the small hole of the oil ring is very small, and the oil inside will be dried and scabbed for a long time, and a cylinder stuck is 5000 kilometers of a liter of oil, at this time, the working conditions of other cylinders will also begin to be bad, and soon the 4 cylinders will be stuck. It becomes a liter of engine oil for 1000 kilometers or even hundreds of kilometers. Therefore, in order to solve the problem, we must start from the root oil circuit, which is the way to remove the root.

Workaround:

Overhaul engine:

If the vehicle is overhauled, the vehicle depreciation is serious, the cost is high, and the later run-in is troublesome.

Non-destructive repair:

Be sure to check the accessories first, under the premise that there is no problem with the accessories, according to the operation requirements, the use of Siyoupu piston ring release agent can solve the problem of burning engine oil.

Decrypt the correct inspection methods and repair plans for burning engine oil.

The oil consumption of a gasoline turbocharged engine is greater than that of a self-priming engine of the same displacement. That's because the oil not only lubricates the engine, but also lubricates and dissipates heat from the turbine, so the oil works in a harsh environment and is more prone to carbonization.

However, high oil consumption and burning engine oil are two different concepts, as long as the engine is working properly, oil will not be involved in a large number of combustion.

What is Burning Engine Oil? What to do if you burn engine oil? The French motor oil brand Yacco is here to teach you how to solve this problem:

To put it simply, the high-temperature mixture in the combustion chamber sneaks into the crankcase from the gap of the piston ring, and then hooks up with the oil vapor, in order to balance the pressure and slow down the aging of the oil, the car is equipped with forced crankcase ventilation equipment, and the mixture gas in the crankcase is introduced into the combustion chamber, but at the same time of ventilation, the oil vapor hooked up with the mixed gas also runs out of the crankcase.

However, the engine oil can't run away, you have to separate it from the mixture, what should I do? An oil-air separator is installed at the end of the ventilation unit to separate the oil and gas mixture.

Theoretically, if the two are separated, they will return to their respective jobs and continue their work, independent of each other, that is, the oil flows back to the oil circuit of the cylinder head, and finally returns to the oil pan, where the mixture is sent to the combustion chamber and continues to burn. However, if the separation of oil and gas is not complete, the oil vapor will follow the mixture into the combustion chamber and be burned, which is what we call "burning engine oil", and what comes out of the exhaust pipe after burning is blue smoke, which is why you know that it is burning engine oil when you see blue smoke.

Why are turbocharged engines more likely to burn oil?

Many engines use aluminum alloy cylinder blocks and other components, due to the phenomenon of thermal expansion and cold contraction of metal, when the turbine is running, the gap between the engine cylinder and the piston will be reduced due to the rapid rise in temperature, so the turbocharged engine compared with the naturally aspirated engine in the initial design reserved a wider cylinder and piston clearance, so as to avoid high temperature expansion after the extrusion of the parts damage. In this way, when the engine is started, when the same viscosity oil is used, the turbocharged engine will have more oil and gas into the combustion chamber than the naturally aspirated engine, causing the oil to burn.

What are the disadvantages of burning engine oil?

1.Of course, it costs money and oil.

It is also a headache to add oil from time to time, and always check whether the oil level is sufficient.

2.It will affect emissions and generate carbon deposits.

Burning engine oil will affect the emission of exhaust gases, and the oil entering the engine combustion will produce carbon deposits that are difficult to clean, and there are many residual problems.

In the worst case, it can also lead to spontaneous combustion of the vehicle, because the accumulation of engine oil is easy to come into contact with the hot exhaust manifold and turbocharger, and there is a risk of spontaneous combustion.

Although it is said that burning engine oil is either a design problem or a production process problem, there are many problems with burning engine oil, and once encountered, it is better to deal with it as soon as possible.

In fact, many models of Volkswagen have the phenomenon of burning engine oil, my Tiguan is that the oil is burned very strong, almost 3000 kilometers or so to add a liter of engine oil, and then use this oil almost more than 7,000 kilometers when adding a liter can be directly replaced in the oil change cycle, I hope it will be equally effective for you.

Turbine engine serious oil burning is a common phenomenon, not necessarily only FAW-Volkswagen cars, there is no better way, my experience is to change the oil frequently, and three filters, try to accelerate gradually when driving, avoid cold throttle. If it's too serious, it's better to go to the garage for maintenance.

To find the source of oil leakage with less oil, the general situation is to repair the engine, which requires replacing the piston ring, checking whether the piston ring groove is too large, and the piston needs to be replaced if it is too large. There are also cars with cylinder liners, check whether they are worn too much. It is also possible to leak oil into the intake chamber, which is analogous to an oil leak from a supercharger, and it is possible to mistake it for a loose piston ring.

These need to be carefully checked by the maintenance worker.

It is estimated that the oil-gas separator is damaged, and if there is a problem with the oil-gas separator, the engine oil and gasoline gas may not be separated well, and they all enter the combustion chamber, so there is a burning of engine oil. Check whether the oil-air separator is damaged, if it is not broken, it may be a problem with the piston ring, go to the repair shop to check it carefully.

This is currently a more serious issue of debate, many people say that Volkswagen's engine cylinder wall has a fine pattern on the suck up a lot of oil, but many BMW cars are also burning engine oil after driving for a long time, so this is still a matter of quality, but Volkswagen has been unwilling to admit it——— Runqiao second-hand car carefully answered.

First, the main reason for burning engine oil.

1. Use engine oil with poor quality or viscosity grade that does not meet the requirements. In addition, too low or too high oil viscosity can lead to poor engine lubrication, increased wear of piston rings and cylinder walls, and reduced sealing performance, resulting in oil burning.

2. The matching gap between the piston ring and the cylinder wall is too large, the piston ring is improperly installed or the sealing is poor, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning the engine oil; In addition, poor sealing performance of the valve seal, damage to the crankcase forced draft valve (PCV) or crankcase vent blockage can cause excessive pressure in the crankcase to cause the oil to enter the cylinder with the crankcase gas and participate in combustion.

3. Burning engine oil caused by excessive oil filling. When the oil is filled above the center line, the part of the engine lubrication process that passes through splash lubrication will be too much into the combustion chamber due to the high oil pressure.

4. Oil leakage from turbocharger. The turbocharger is mounted at the front of the exhaust pipe and operates at a very high temperature, and the turbine and pump wheels can reach 120,000 revolutions per minute when the engine is running at full load. The turbine shaft has oil-lubricated floating bearings, and the car has one oil passage to the turbocharger.

Oil leaks from pipes or bearings can allow oil to seep from the turbocharger into the exhaust pipe. When the exhaust pipe temperature is high, the oil is baked and discharged into blue smoke.

5. There is leakage in the valve oil seal, which means that the oil leaks into the combustion chamber through the valve oil seal.

Second, the method of preventing the burning of engine oil.

1. Use engine oil that meets the technical requirements of the vehicle. Many car owners never read the vehicle manual, and they don't know what quality and viscosity grade oil their vehicles use for a few years, and there is a lot of arbitrariness in the use of engine oil. When using engine oil, one is to pay attention to the quality index, and the other is to pay attention to the viscosity index.

The quality index refers to the grade above SL as much as possible, and the viscosity index should be strictly in accordance with the provisions of the viscosity index in the automobile manual, and cannot be too low or too high.

2. Avoid frequent rapid acceleration and long-term ultra-high-speed driving. When the engine rotates at ultra-high speed, it is easy to break the lubricating oil film, resulting in poor lubrication and dry grinding of the rotating parts, and when it becomes a regular operation, it will make the engine wear abnormally and burn the oil, therefore, maintaining economic speed is one of the best ways to prevent the phenomenon of burning oil.

3. The oil must meet the specifications when filling. When the oil filling volume exceeds the center line, the repairman should be asked to pump out the excess oil, in addition, the oil volume should be observed before the next day.

4. If you find that the engine oil is burned, go to the maintenance station for inspection as soon as possible. If it is due to engine failure (such as poor piston ring sealing, valve oil seal leakage, cylinder gasket leakage, etc.), you should go to the maintenance station as soon as possible to check and repair the fault as soon as possible.

What is the cause of engine oil burning in Volkswagen cars?

1.First, check the reason for burning the oil-related accessories and eliminate the problems of the relevant accessories.

2.Through the first step to eliminate the problem of related accessories, it is determined that the piston ring is stuck and causes the oil to burn.

Determining the piston ring is to be deduced in reverse to determine the reason for the piston ring, so it is very simple to check the external accessories, and the second is to determine that it is the piston ring, so as not to take a detour.

There are several situations of burning engine oil, and the most encountered is the stagnation of the piston ring, and there is also the valve oil seal that burns the engine oil. Most of it is a problem with the piston rings. Before introducing the piston ring problem, let's take a brief look at the oil burning phenomenon of valve oil seals.

Workaround:

Don't worry about burning engine oil, prescribe the right medicine, as long as the carbon deposition problem of the piston snap ring is solved, there is no need for overhaul, and the problem of burning engine oil can be directly repaired. Before burning engine oil, through many understandings, the vehicle was completely solved by using the method of dismantling and non-destructive repair of burning engine oil by Siyoupu.

The problem of adding one liter of engine oil for 1,000 kilometers, after fixing, there is no need to add oil for 5,000 kilometers. At the same time, it can clean the carbon deposits and colloidal impurities in the oil circuit, and the plugging of the fuel injector and the carbon deposits in the combustion chamber can be cleaned at one time.

As long as you use the general burning oil repair agent for 4 times in a row and drive more, you can clean the carbon deposits on the top of the piston and release the piston ring.

Decrypt the correct inspection methods and repair plans for burning engine oil.

In order to protect the engine and prolong the life of the engine, German cars are designed to reduce the frictional resistance between the piston ring and the cylinder wall, and an oil film will be formed in the cylinder wall, and part of the oil film will be burned off with the gas burned at high temperature, so the oil loss is more than the same period last year.

1. Volkswagen's processing technology for engine cylinders, the engine cylinder wall is shown as a mesh shape under the microscope, each small mesh is a "small oil depot" for storing oil, and the piston has better lubrication performance than the flat cylinder wall when running up and down in the cylinder, which also minimizes the wear between the piston ring and the cylinder wall.

2. The toughness of the piston ring of the Volkswagen car is better, and the degree of tension is weaker than that of the Japanese car, simply put, it is strong, but the elasticity is small, and this matching naturally reduces the wear caused by the piston ring running up and down on the cylinder wall, so the Volkswagen car after driving hundreds of thousands of kilometers to measure the wear of the cylinder wall of the engine, which is much smaller than that of other car series, and the engine can still maintain good working condition.

3. The engine is like the heart of the car, the engine burns oil in the final analysis, or the piston ring has a problem, under normal circumstances, there will be oil loss every 1000km, if it exceeds too much, it is possible to burn oil. If there is a problem with the sealing of the piston ring, the oil will follow the movement of the piston and secretly drill into the combustion chamber to participate in the combustion, and then the oil will be burned.

4. In order to prolong the service life of the engine, Volkswagen manufacturers cause engine oil to be burned.

Precautionary measures for burning engine oil:

1. Use high-quality engine oil

Engine oil is very easy to corrode and age in a long-term high temperature state, resulting in the oil film becoming thinner, and it is easier to escape to the combustion chamber to participate in combustion, so the use of high-quality engine oil can greatly delay this phenomenon.

2. Pay attention to the cleanliness of the fuel circuit

Fuel in the combustion process is indispensable to produce carbon deposits, and carbon deposits are the root cause of some car failures, such as the aging of valve seals, piston cylinder wall clearance, etc., all of which are directly or indirectly related to the formation of carbon deposits, so keeping the fuel circuit clean is of great help to prevent burning engine oil, of course, this needs to be done with the help of high-quality PNF fuel additives.