What s wrong with the dirty oil burning in the car? What s going on with burning engine oil in a car

There is a fault of burning engine oil in the vehicle, and the common fault points are as follows:

The piston ring inside the engine failed, causing the oil to flow into the cylinder for combustion, resulting in a failure to burn the oil.

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The gasket between the cylinder head and the cylinder block of the engine is deformed or damaged, causing the oil in the oil duct to flow into the cylinder for combustion, resulting in the failure of the engine oil burning.

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The engine cylinder wall is worn, and a gap appears between the piston ring and the cylinder wall, causing the oil to flow into the cylinder for combustion, resulting in oil burning.

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The above faults will cause the vehicle to burn oil, and the engine needs to be disassembled to replace these 3 parts.

How can you tell if you burn engine oil?

1. Check whether there is blue smoke in the exhaust emissions;

2. Check whether there is often less oil (except for oil leakage); Note: In the case of high engine temperature, oxidation (leakage), etc., there must be consumption, and the standard of general consumption is 1% of gasoline.

3. Burning engine oil caused by adding too much engine oil (this phenomenon is less, but it also exists.) I wish your car was caused by this, so that you don't have to lose time and incur costs);

4. Whether the power of the car decreases (the power decreases after the compression ratio decreases) and other steps can be used to determine whether the engine oil is burned. This aspect can be measured in a primitive way, that is, the cylinder pressure (you can also pour a little oil to measure the cylinder pressure comparison), if the cylinder pressure is not enough, at least it means that the piston ring has a poor seal, and the severity of the oil burning can also be inferred according to the cylinder pressure.

Causes of burning engine oil:

1. Burning engine oil in a cold car: When the temperature of the car is not completely warmed up, the engine exhaust pipe emits a lot of blue smoke, but it is normal after the car is heated. This phenomenon is caused by the aging of the valve oil seal.

Due to the decrease in temperature, the valve oil seal of the rubber material is stiff and cannot be completely sealed, and the oil leaks from the valve into the combustion chamber and burns.

Solution: Remove the engine cylinder head and replace the valve oil seal (please rest assured, this belongs to the repair project.) The repair time is about 4-5 hours. The cost ranges from 800 yuan to 1200 yuan, depending on your car).

2. Hot car burns engine oil: After the car reaches the normal temperature, the exhaust pipe still emits blue smoke, which indicates that the piston ring has a poor seal. Due to the poor sealing of the piston ring, the oil directly enters the combustion chamber through the piston ring leakage under the action of the oil pump, and there is a phenomenon of blue smoke from the exhaust pipe.

There are several reasons for this phenomenon, such as: material aging, carbon deposition jamming, excessive wear of cylinder liners, etc.

Solution: According to the normal operation method, the engine needs to be lifted down for overhaul operations. The repair time is about 2-4 days. The cost ranges from 5,000 yuan to 20,000 yuan, which needs to be combined with your car, and the cost is mainly high in accessories.

In addition, there is another way to deal with it: if it is determined that the oil is burning in a hot car and it is not very serious (for safety reasons, the cylinder pressure test can be carried out first), the oil pan can also be removed directly, the piston can be directly taken out, and the piston ring can be replaced, so that the cost and time are similar to the first solution.

Hope it helps.

Burning engine oil means that the engine oil enters the engine combustion chamber and participates in combustion together with the mixture. Burning oil in the car will damage the vehicle's oxygen sensor too quickly, resulting in increased carbon deposition in the combustion chamber, resulting in unstable idling, weak acceleration, increased fuel consumption, and excessive exhaust emissions. In severe cases, the engine can be damaged beyond repair or even scrapped.

The main reason for burning engine oil.

1.It is the problem with the fittings, the wastegas valve, the valve seal, the cylinder pulling the cylinder, and the cylinder pressure is insufficient.

2.It is a long-term unclean oil circuit, the antifreeze is not replaced in time, the oil service life is too long, the piston ring is stuck, and the more common situation is that the piston ring is stuck.

Causes of piston ring seizure.

Stagnation starts from the oil circuit, the oil bears the temperature at 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 fail 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 a liter of oil for 5000 kilometers, at this time, the working conditions of other cylinders will also begin to be bad, and soon the 4 cylinders are stuck, and it will become a liter of 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.

Resolution. There are two ways to solve the problem of burning engine oil, one is overhaul, and the second is PNF repair agent. In the case of overhaul, the cost is very high, the vehicle depreciates quickly, and the later run-in is also very troublesome.

First of all, you need to find out the reason why you are burning engine oil.

Identification method of burning engine oil:

1. Cool car burning engine oil: When you get on the car for the first time every morning, there will be a relatively thick blue smoke exhaust from the rear exhaust pipe. After a while, the blue smoke disappears, and there is generally no similar situation on the day.

2. Burn engine oil when accelerating: When the driver slams on the accelerator or steps on the accelerator when the vehicle is moving, a large amount of blue smoke is discharged from the exhaust pipe, and when the driver slams the accelerator when the vehicle is driving, the driver can see the blue smoke from the reflector on the exhaust pipe side.

3. Fill the vehicle with the phenomenon of "burning engine oil" with engine oil, let the owner go to the maintenance station to weigh the oil filter after driving 1000 kilometers, and then fill up the engine oil, and then let the owner drive 1000 kilometers. Repeated 3 times, to obtain an average value, after the run-in period of normal oil consumption can generally reach 1000 kilometers liters, if the standard is exceeded, there is a situation of burning oil.

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 wall clearance, etc., all have a direct or indirect relationship with the formation of carbon deposits, considering the relationship between domestic oil products, it is necessary to use high-quality engine oil and (PNF) fuel additives to achieve, which is also the key to achieve no dismantling and repair to solve the problem of burning engine oil.

1. The piston ring sealing effect is not good, if the car is driven to a normal temperature, but there is still blue smoke from the exhaust pipe, which means that the piston ring seal is abnormal. Once the piston ring sealing effect is poor, it is easy to cause oil burning.

2. The valve oil seal is aging, and when the valve oil seal is aging, it cannot play a better sealing effect. At this time, the oil will directly enter the combustion chamber from the valve to fully burn, and eventually cause the oil to burn.

3. If the oil is not used, when the oil enters the cylinder, the gas impurities cannot obtain a better purification effect. As a result, a lot of dust particles will enter the cylinder, which will accelerate the wear rate of the cylinder and cause the oil to burn.

4. The engine is not maintained in time, which causes the oil to be too dirty, especially in the oil, which will lead to the acceleration of the wear of the engine cylinder, which will cause the car to burn oil.

Automobile oil burning refers to the phenomenon of oil burning due to the friction and wear of various parts inside the engine and the high temperature inside the engine during the operation of the automobile engine, resulting in the loss of engine oil. There are several possible causes of oil burnout:

First, the oil is not changed in time. During the operation of the automobile engine, the oil will deteriorate with the increase in temperature and lose lubricity, which will lead to the aggravation of friction and wear of the internal parts of the engine, which will lead to the loss of oil, which will lead to the burning of the oil.

The second is that the internal temperature of the car engine is too high. If the internal temperature of the car engine is too high, it will cause the temperature of the oil to be too high, which will cause the oil to lose its lubricity, which will lead to the aggravation of friction and wear of the internal parts of the engine, which will lead to the loss of the oil, which will lead to the burning of the oil.

Third, there are impurities inside the car engine. There are impurities inside the engine of the car, which can cause the oil to be contaminated, which will cause the oil to lose its lubricity, which will lead to increased friction and wear of the internal parts of the engine, which will lead to the loss of oil, which will lead to the burning of the oil.

Fourth, the internal parts of the engine are damaged. Damage to the internal parts of the car engine will cause the oil to lose its lubricity, which will lead to the aggravation of friction and wear of the internal parts of the engine, which will lead to the loss of oil, which will lead to the burning of the oil.

1. Piston ring damage: Burning engine oil means that the engine oil enters the combustion chamber of the engine through a certain way and participates in combustion together with the mixture, mainly due to the damage of the piston ring causing the cylinder to leak and the oil to flow into the combustion chamber. With the increase of the mileage of the car, the wear between the piston and the cylinder gradually increases, when the wear increases to a certain extent, the cylinder channeling will start to do the migration, and then the phenomenon of burning engine oil will occur.

When the valve oil seal is damaged, it will make the oil burning phenomenon more obvious.

2. Air filter blockage: it will lead to poor air intake, reduce the intake pressure, form negative pressure, and cause the oil to be sucked into the combustion chamber under negative pressure, causing the oil to burn.

3. There is too much dirt in the water tank in the cooling system: the radiator and condenser are too dirty, which reduces the ventilation and heat dissipation capacity and increases the normal working temperature of the engine. Due to the high temperature, the quality of the oil film produced by the lubricating oil when rubbing is reduced, and the wear of the cylinder is intensified.

4. Low oil quality grade: It will lead to aggravated wear, and the oil viscosity is too low or too high, which will cause poor engine lubrication, increase the wear of the piston ring and cylinder wall, and reduce the sealing performance, resulting in oil burning.

The car will burn engine oil, which is normal within a limited amount, and if it exceeds a certain value, it is abnormal.

In this case, the cylinder liner is generally worn, the piston is worn, and the matching gap between the piston and the cylinder wall is too large. The valve oil seal was damaged, and the gap between the valve guide rod and the valve was too large, causing the oil to flow into the combustion chamber for combustion. In this way, there will naturally be less oil.

If the oil burns seriously, it needs to be overhauled

Because the reason for burning the engine oil is too much: from the above, such as valve oil seals, valves, and then piston rings, oil and gas separation, etc., in a nutshell, it is a case of wear and tear, resulting in the oil channeling to the combustion chamber to participate in combustion.

The piston is worn, the matching gap between the piston and the cylinder wall is too large, and the oil is pumped into the combustion chamber through the excessive gap during the engine operation.

cylinder barrel, piston, piston ring, valve, oil seal, etc.

Theoretically, the engine only burns gasoline, but the main role of oil is to lubricate parts, and the two are not related to each other. In fact, no engine is immune to burning oil. The main reason is to lubricate the cylinder walls.

When the engine is running, the oil is constantly thrown against the cylinder wall, and due to the presence of cylinder clearance, it is inevitable that a small part of the oil will burn along with the gasoline. That's why engine oil is burned inside the car. "Burning oil" means that the engine oil enters the combustion chamber of the engine and is used with the gas mixture to participate in the combustion.

Oil burning is a very serious problem for vehicles. It will not only consume more oil, but also cause the combustion chamber to burn more incompletely, and the sensitive potato bucket is easy to accumulate carbon, and the discharge key is exceeded. In addition, it will also affect fuel consumption and other aspects, resulting in unstable idle speed, reduced acceleration and other adverse consequences.

In severe cases, due to insufficient engine lubrication, it will cause irreparable damage or scrap to the engine, greatly increase maintenance costs, and bring potential accidents to the vehicle. We can use a trip computer and a traditional fuel gauge to detect the amount of oil residue. If it is not the maintenance day, but it is obvious that the oil consumption is too fast, for example, the vehicle has driven 1000 kilometers for 3 months, and the oil scale has dropped from the normal point to below the lowest scale, it needs to be paid attention to.

If there is no oil leakage in the engine, the phenomenon of "oil burning" will basically occur.

The main phenomenon of burning engine oil is the exhaust pipe emitting blue smoke, and the oil consumption in the engine is significantly increased. There are two reasons for this:

1. Natural wear and tear. With the increase of the mileage of the car, the wear between the piston and the cylinder gradually increases, when the wear increases to a certain extent, the cylinder blow-by will begin, and then the phenomenon of burning engine oil will occur. When the valve oil seal is damaged, it will make the oil burning phenomenon more obvious.

2. Improper maintenance. 1. Maintaining the engine according to the specified mileage will prolong the service life of the engine. On the contrary, even if the mileage is exceeded and not insured (i.e., the insurance is delayed).

If the oil is too dirty, the impurities in the oil will accelerate the wear of the engine cylinder. 2. Too much oil is added. 3. Improper selection of air filter element, machine filter element, engine oil, etc., the gas impurities entering the cylinder can not be well purified, and all kinds of dust particles enter the cylinder, accelerating the wear of the cylinder.

The quality of the filter element is poor and does not play the role of the magazine in the filter oil. Counterfeit engine oil or the oil used does not match the oil grade of the vehicle used, so that it will not be able to form a good oil film on the friction surface of the engine. 4. The ignition time is too early or too late.

Premature or late shock will increase the temperature of the engine, and in severe cases, the piston will fall off the top and the cylinder block will be scrapped. In its initial stage, there will be serious cylinder blow-by gas and burning engine oil. 5. There is too much dirt in the water tank in the cooling system.

The radiator and condenser are too dirty, which reduces the ventilation and heat dissipation capacity, and increases the normal working temperature of the engine. Due to the high temperature, the quality of the oil film produced by the lubricating oil during friction decreases, and the wear of the cylinder is intensified.

To sum up, in addition to the natural wear and tear of the vehicle with the increase of vehicle mileage and the generation of engine oil, active maintenance and reasonable use of the vehicle can avoid the early arrival of the cylinder blow-by phenomenon and prolong the service life of the car.