What happens to burning oil after a diesel car repairs the engine

There are two causes of engine oil burning:

1.Positive wear and tear is a normal phenomenon after a certain number of kilometers of driving. The general vehicle is about 200,000 kilometers, and different vehicles, different people, and different regions have a great impact on the service life of the engine.

I won't say much about the normal wear and tear of vehicles that exceed a certain service life and kilometers, and the overhaul should be overhauled.

2.Abnormal wear and tear: The cause of abnormal wear and tear is early wear caused by product quality and improper use. If your car burns oil during the warranty period, please contact the manufacturer's four S shop in time to negotiate repair or replacement of the engine.

The reasons for the early wear of the engine are: the use of unqualified oil, the overdue non-replacement of the oil and the oil cleaner, the cold car throttle start, the long-term lack of oil under the operation, the long-term operation at high temperature, the long-term overload and high speed operation, the long-term operation in the state of poor air quality and the expiration of the air filter, the oil pump oil pump force is insufficient, the oil pressure is too low, the oil channel is blocked, etc., will make your engine reduce the service life and cause early wear.

Knowing the reason, friends should avoid the above mistakes in daily driving maintenance, take good care of the vehicle, and prolong the service life of the engine.

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 cylinder block, piston and valve lubrication, but only in small amounts. This refers to the phenomenon of burning engine oil beyond the normal range.

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 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.

Pay attention to these components when burning engine oil in automobile engines.

Timely detection of engine oil burning, timely use of the engine protection product "magic pressure" of Taiwanese racing car maintenance brand BOD, can effectively solve the problem of automobile oil burning.

Hello, the general diesel engine also depends on the situation after burning the oil, the piston and piston ring can be replaced by slight maintenance, if the oil is burned very badly, then the cylinder barrel needs to be replaced. The suggestion can be decided based on your actual situation.

The above views are personal only, please refer to them at your discretion.

Generally, the engine oil is burned four sets of old, if it burns badly, replace the four sets.

Change the fire plug and cylinder barrel and fire plug ring.

First of all, it is important to determine under what circumstances your car burns engine oil, there is more than one phenomenon of burning engine oil.

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.

The main reason for burning engine oilIn two aspects, one is that there is a problem with the accessories, the waste valve, the valve oil seal, the cylinder is pulled in the cylinder, and the cylinder pressure is insufficient. The second is that the oil circuit is not cleaned for a long time, the antifreeze is not replaced in time, the oil service life is too long, and the piston ring is stuck, and the more common situation is that the piston ring is stuck. 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.

SolutionThere 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 have to find out the reason for your burning oil, and you can refer to it if you have repaired it with a repair agent before.

Not a major overhaul to solve the problem of burning engine oil.

Summary of oil burning repair of various models.

This is due to the piston ring, especially the oil ring wear or piston ring matching, or the poor elasticity of the ring, broken ring, and the piston ring is stuck in the ring groove by carbon deposits, etc., the piston ring scraping effect is greatly reduced, so that the oil on the cylinder wall to the piston top combustion chamber, causing oil burning. The diesel engine runs all the time under high temperature and high load conditions, which will cause wear of piston rings and cylinder liners, pull the cylinder and cause oil burning. It can be said that the reason why a four-stroke diesel engine burns engine oil is the same as the reason why a gasoline engine burns oil.