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Vehicles with the phenomenon of burning engine oil will have different degrees of exhaust "blue smoke" symptoms, oil consumption has increased significantly, and the oil has to be replenished in a short time. The phenomenon of burning engine oil in the vehicle will lead to an increase in carbon deposits in the combustion chamber, a decrease in the economy and power of the vehicle, and excessive exhaust emissions.
Use oils that are of poor quality or do not meet the viscosity grades. 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.
The poor sealing of the cylinder is the main cause of oil burning. The poor sealing of the cylinder is mainly due to the excessive matching gap between the piston and the cylinder wall, the improper installation of the piston ring or the poor sealing, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning oil. In addition, poor sealing performance of the valve seal, damage to the crankcase vent valve, or crankcase vent blockage will cause the oil to enter the cylinder with the crankcase gas to participate in combustion.
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 hot. 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.
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.
For some old cars, it is relatively normal to burn engine oil, and we can appropriately choose slightly more viscous engine oil to increase the sealing between the piston and the cylinder wall. Of course, the ultimate solution to the problem of burning engine oil is to overhaul the vehicle more thoroughly and fundamentally solve the problem.
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If you just burn the engine oil when climbing, it may be that the oil is added more, and too much oil splashed on the crankshaft on the slope causes the oil to burn!
As long as you have no problem driving on flat ground, then you don't have to worry!
If it feels helpful to you, then give it a go!
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Hello dear! Doesn't the flat ground burn? I hope it can help you, please set it as! Thank you!
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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.
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The valve is designed to prevent oil from leaking into the combustion chamber, but with the longer the service life, it will wear and age, making the valve seal poor, and the oil can easily enter the combustion chamber.
Often long-term operation, there will be carbon deposits in the piston part, and there will be a certain degree of wear, after a long time, the piston gap becomes larger, and the oil is easy to enter the combustion chamber.
If the oil volume is too large, the oil pressure will be too large, and part of the oil will be pressed into the cylinder, and the oil will also be burned.
The solution to burning engine oil is basically to repair the engine, clean up the carbon deposits in the engine, and replace damaged parts, such as removing the engine cover and replacing the valve seal. If it is more serious, the engine needs to be overhauled, so when encountering the phenomenon of burning engine oil, it cannot be ignored and should be dealt with in time.
Dear Check out your answers! Have a great day!
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There are three main reasons why cars burn engine oil:
1. Oil leakage at the valve oil seal, the reason is that the quality of the valve oil seal is not good, or the engine temperature is high, or the exhaust gas is blocked to the exhaust gas and has a large impact on the valve oil seal.
2. The crankshaft breather mechanism cannot filter the oil, and the oil is sucked into the air intake, which can only improve the oil filter mechanism to eliminate the fault or improve the efficiency.
3. Oil leakage from the piston, which is manifested as carbon deposition on the exhaust side of the throttle valve, but the greatest harm, mainly due to the poor quality of the piston and piston ring or the lack of process accuracy, but this is only the appearance, because the current engine materials are half a catty, then under the same material, under the same displacement (take the engine as an example):
Some engines use short stroke, large bore piston, so that the area of the piston ring bearing gas and oil energy is much greater than the small bore long stroke, so that the area of the piston ring bearing gas and oil energy is small, then under the same displacement, the push and pull force of the piston ring to the piston is different, the greater the push and pull force, the greater the destructive force of the piston ring to the piston. Under the turbine, the piston ring bears more gas and oil energy, and the piston ring has more destructive force to the piston, which is more serious about burning the oil. (Note:.)
The piston ring is stuck in the piston groove, and the greater the piston ring bears gas and oil energy, the greater the damage to the piston groove; If there is a problem with the piston groove, the piston ring will not be able to seal the cylinder, and the oil will be burned).
The solution after burning the oil:
Generally, the easiest and quickest way is to add special repair preparations, specifically, the main ones are the following:
1. Melting and casting: soft metals or other special materials (such as early "Teflon") are attached to the friction surface instead of the original metal friction, which enhances the sealing on the one hand and protects the metal on the original friction surface on the other hand. This kind of additive can play a certain role in the initial stage of burning engine oil, but because it is granular and random oil flow, it is easy to block the oil circuit and filter element, causing greater failure, in addition, because of its own small hardness, it will gradually wear out with use, and the oil will be discharged randomly when replacing the oil, which needs to be added continuously.
2. Forging: The metal is forged on the friction surface through the high temperature and high pressure inside the engine to form a new friction surface, increase the size of the original workpiece, strengthen the seal, and protect the original friction surface. This kind of additives are relatively rare on the market at present, and if the amount is sufficient, it can be added once and even for a long time without having to add it in the short term.
Although both additives can alleviate the phenomenon of burning engine oil to a certain extent, it should be reminded that additives cannot solve the problem of burning engine oil. Because additives are not cheap, if they are used frequently, it will not be long before the cost of repairing the engine will be the same, but it is not as reliable as repairing the engine.
Avoiding burning engine oil prevention is key:
Avoiding engine oil burning is generally a good and suitable lubricant and replacing it regularly. However, it should be noted that the design concept of the engine is different in each country, so the cost of repair and the effect of repair vary greatly depending on the model in different countries. There is universal and practical advice, which is to use the oil well and change it regularly.
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"Burning oil" means that the oil enters the combustion chamber of the engine and participates in the combustion along with the gas mixture. The phenomenon of "burning engine oil" in the vehicle will damage the vehicle's oxygen sensor too quickly, resulting in an increase in carbon deposition in the combustion chamber, unstable idling, weak acceleration, increased fuel consumption, excessive exhaust emissions and other adverse consequences.
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The gap between the piston rings and the cylinder in the cylinder is too large, resulting in incomplete oil scraping, and the oil will burn off slowly.
The solution is an overhaul of the engine, replacement of piston rings, necessary boring cylinders, etc.
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Automobile burning oil generally needs to be overhauled, and the gap is too large.
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Change the piston rings.
If not, you have to change the four matching (cylinder barrel, piston ring, small shaft).
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That should be the oil you use is not good and the power is insufficient, the 4S shop to add is mineral oil or semi-synthetic oil to use this effect, I Q3 out of warranty after not in use, has been relying on PAO fully synthetic GT magic red maintenance, this is imported from Germany, the product is trustworthy, the effect is also very good, the climb is not difficult, the power is very sufficient, the acceleration response is also fast, high-speed continuous overtaking is very agile. I plan to use this good oil for maintenance all the time, and it can also help me delay the burning of engine oil.
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The easiest way to deal with burning engine oil is to bring a bucket of oil in the trunk, and then check it diligently.
In general, the performance of burning engine oil is the exhaust pipe when driving to remove blue exhaust gas, which means that too much oil enters the combustion chamber to participate in combustion. Under normal circumstances, the engine will also burn off some of the oil from the noise and the cylinder block, piston and valve lubrication, but only in small amounts.
There are two situations in which cylinder oil is involved in combustion:
One is that the cylinder barrel is worn too much and the oil leaks into the combustion chamber, and the other is that the piston body is worn too much or the piston ring fails; The oil in the cylinder head is involved in combustion because the valve guide is worn out and the gap is formed, the oil leaks into the combustion chamber or the gasoline oil seal deteriorates and the tightness decreases, causing the oil lead valve to flow into the combustion chamber.
Once there is a phenomenon of burning engine oil, it must be solved in time. The most fundamental way is to disassemble the engine for repair and replace the worn parts. It is not recommended to rely on additives to solve the problem. Regular maintenance, the use of qualified, suitable engine oil is the fundamental way to prevent the phenomenon of burning engine oil.
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The treatment method of burning engine oil in the car is:
1. Use high-quality engine oil. Engine oil is essential for the normal operation of the engine, not only for lubrication, but also for cleaning, cooling, sealing and rust prevention.
If there is a slight burning of engine oil, you can use a better quality engine oil. Conditional use of qualified quality semi-synthetic engine oil or fully synthetic engine oil.
2. Clean the combustion oil circuit to avoid carbon deposits. Carbon deposits that block the movement of engine pistons, damage to piston rings that affect seals, and damage to cylinder blocks that affect seals all cause lubricating oil to leak at the closest point to combustion.
On the one hand, this not only affects the combustion efficiency of fuel, but also causes irregular combustion, aggravates the development of carbon deposition, and forms a vicious circle of increasing carbon deposition and aggravating the degree of engine oil burning.
On the other hand, the harmful gases produced by the combustion of lubricating oil seriously pollute the environment, so avoiding the formation of carbon deposits is an effective way to avoid burning engine oil.
3. Use fuel additives. There are certain reasons for the formation of some engine oil and carbon deposits, which need to be solved with some clean fuel additives, which is just like doing daily maintenance.
4. The cold car burns the engine oil but the hot car is normal, and the appearance of this phenomenon is caused by the aging of the valve oil seal. Simply remove the engine head and replace the valve seal.
5. Heat up the car and burn the engine oil. Blue smoke is still emitted from the exhaust pipe after the car has reached a normal temperature, indicating that the piston rings are poorly sealed.
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.
The engine needs to be lifted down for overhaul work. The maintenance time is about 2-4 days, depending on the car.
6. There is another way to deal with it: if it is determined that the hot car burns the engine oil and it is not very strict (for safety reasons, the cylinder pressure test can be carried out first), you can also take out the piston directly.
Replace the piston ring treatment. Thumbs up.
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There are four common reasons for burning engine oil.
1.If you don't clean the oil circuit for a long time or don't do effective oil circuit cleaning, detergents are used at will, and using detergents and effective detergents are two different things;
2.The antifreeze replacement cycle is too long or not changed at all;
3.The oil change interval is too long;
4.Long-term or often short-distance driving.
The above four points of the vehicle that burns engine oil must be occupied by one or three points.
Precautionary measures for burning engine oil:
1. Use high-quality engine oil.
Engine oil is very easy to corrode and age under the high temperature state of the long banquet detection time, resulting in the thinning of the oil film, which 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 is indispensable in the combustion process 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 the burning of engine oil.
3. With the help of external forces
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 solving the problem of burning engine oil without dismantling and repair.
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