The Dongfeng 6114 engine emits blue smoke

The blue smoke is not divided into burning engine oil

Blue smoke from the engine indicates organic oil in the cylinder, and these oils are discharged as blue smoke at low temperatures and low loads. At high temperatures and high loads, dark gray smoke is discharged.

Reasons: 1. The oil level in the oil bottom is too high.

2. The oil level of the air filter is too high.

3. Piston ring failure.

4. The catheter fit is loose.

5. The cylinder is worn and the piston ring is loose.

6. Twisted rings and conical rings are reversed.

Introduction Diesel engines are engines that burn diesel fuel to obtain energy release. It was developed by the German inventor Rudolf Diesel

Diesel was invented in 1892, and in honor of the inventor, diesel is represented by his surname Diesel, and diesel engines are also known as Diesel engines

engine)。

The blue smoke from the engine is basically burning the engine oil, and there are many reasons for this, roughly the following situations:

1. If the back pressure of the oil return oil circuit of the supercharger is too high, check whether the supercharger is leaking and whether the oil return pipe is blocked.

2. The exhaust gas valve is damaged, and the oil and gas cannot be separated, and it re-enters the combustion chamber for combustion.

3. The valve oil seal is aged, damaged or damaged, and the gap between the valve and the guide is too large.

Fourth, the oil exceeds the upper limit, so that the crankshaft throws the oil into the combustion chamber to participate in the combustion during high-speed operation.

5. The engine is severely worn, resulting in too large a gap between the piston and the cylinder wall, and the oil enters the combustion chamber through the gap.

Sixth, the piston ring is stuck, and the cylinder wall oil participates in the combustion. This is the reason why most cars burn engine oil.

The solution to burning engine oil.

In the habitual thinking of car enthusiasts, they always think that the piston ring stuck engine oil should be overhauled, so that it will not only bear high maintenance costs, but also bear the unpredictable risks and depreciation losses brought about by the overhaul. Destroy the airtightness and precision of the engine. And there is a possibility that the engine oil will burn again after tens of thousands of kilometers, so overhauling the engine is not sustainable.

Now the no-dismantling technology has been very mature and gradually accepted by the majority of car owners. In particular, the non-destructive repair products containing PNF patented technology have completely gotten rid of the technical shackles of burning engine oil and having to go to the auto repair shop for overhaul, without removing a screw, repairing and releasing the piston ring stuck engine oil while driving, with remarkable results.

What is the cause of blue smoke from the engine There are many situations of blue smoke from the engine, and the reasons for the blue smoke are often different, and the following types should be clear to everyone.

1. If the back pressure of the oil return oil of the lubricating oil circuit of the supercharger is too high, check whether the supercharger is leaking oil, including the supercharger itself and the oil return pipeline of the supercharger. If the oil return line of the supercharger is blocked, resulting in poor oil lubrication and oil return, the oil will enter the intake pipe and enter the combustion chamber to burn and emit blue smoke, and the seal of the turbocharger turbine shaft will not be tightly sealed, which will also cause the oil to enter the intake pipe for combustion.

Since the turbocharger is a high-speed running component, sufficient and stable oil must be obtained during the working process to ensure moist and smooth heat dissipation to ensure the normal operation of the turbocharger assembly. However, when the turbocharger turbine shaft seal is not tightly sealed, it can cause oil to leak into the turbocharger airway.

2. The piston ring is poorly sealed, and the condition of the cylinder liner, piston and piston ring is checked. If the wear is severe, the gap is too large, causing the oil to run up to the combustion chamber for combustion. At the same time, poor piston ring sealing will lead to engine blow-by, resulting in an increase in engine crankcase exhaust gases.

The piston rings lose their function, and a large amount of oil escapes to the combustion chamber for combustion, resulting in the emission of blue smoke.

3. The viscosity of the engine oil is not selected correctly, which is manifested as no blue smoke when starting in the morning, after the hot car, there will be a small amount of blue smoke discharged, there is no blue smoke before, after changing another oil, the blue smoke is generated, and there is a speed acceleration function when accelerating, but the oil consumption is too fast, and the engine noise increases.

4. Long-term incorrect driving mode, long-term overload operation, etc., resulting in premature aging and wear of the engine.

5. The valve oil seal is aged, damaged or damaged, and the gap between the valve and the guide is too large.

What is the cause of blue smoke from the engine.

The blue smoke from the engine is generally burned oil. However, the specifics still have to be checked and analyzed.

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. This is mainly due to a cylinder leak caused by damage to the piston rings, and oil escapes into the combustion chamber. It is recommended to carry out maintenance as soon as possible, if this is the case in the long run, not only the oil consumption will be large, but also the impurities generated by the combustion of the engine will cause the increase of carbon deposits in the combustion chamber, which will affect the engine performance.

There are generally two common situations:

1.Scratches on the inner wall of the cylinder, poor piston sealing, or severe wear of the valve will produce gaps, and the oil that was originally responsible for lubrication will enter the combustion chamber through these gaps to participate in combustion, and the oil that cannot be burned will produce blue smoke when it is discharged out of the car.

2.In addition, excessive oil filling will also easily lead to oil burning, excess oil will be brought into the cylinder for combustion, resulting in oil burning, and excessive oil will also hinder the normal operation of the crankshaft arm, allowing it to do additional work and increase energy consumption.

It is recommended that it is best to find a professional place to repair the engine and check the engine. (Photo by Q&A: Q&A called the beast) @2019

The blue smoke is mainly due to the excessive amount of engine oil burning in the combustion chamber, which is mostly related to engine wear, and may also be related to the incorrect selection of the viscosity of the engine oil, the specific situation is as follows:

1. Normal wear and tear of the engine.

Due to the age of the engine, the wear between the working parts is intensified, resulting in a larger gap and a decrease in sealing performance, and the oil is transferred to the cylinder through other parts to participate in combustion, resulting in blue smoke.

2. Abnormal wear and tear of the engine.

Due to the fact that the friction components are not fully lubricated during the use of the engine (long-term lack of oil or oil and filter; The engine is cooled and the throttle is working, etc.), resulting in abnormal wear and tear of the engine, causing oil leakage and combustion, and producing blue smoke.

3. The viscosity of the engine oil is not selected correctly.

It is manifested as no blue smoke when starting in the morning, after the hot car, there will be a small amount of blue smoke discharged, there was no blue smoke before, after changing another engine oil, the blue smoke is generated, and there is a speed acceleration function when accelerating, but the oil consumption is too fast, and the engine noise increases.

Blue smoke fault disposal:

1. If the engine starts in the cold engine state and emits blue smoke, the engine needs to be disassembled, the valve oil seal needs to be replaced, and the full set of valve oil seals is generally replaced.

2. If the engine emits blue smoke during acceleration, it needs to be disassembled to determine whether the specific cause is too large the gap between the piston and the cylinder, or the piston ring matching problem.

3. The engine is emitting blue smoke at any time. If the engine emits a lot of blue smoke no matter what the operating conditions are, it proves that the engine is already very worn and must be overhauled.