1 5 Question T engine suddenly smoked?

The engine suddenly emitted thick white smoke analysis:

1. There are many reasons for white smoke, mainly in the following aspects.

1. The engine temperature is too low. Some diesel fuel turns into oil vapor when it is not burned, and is discharged from the exhaust pipe with the exhaust gas, emitting white smoke.

2. There is water in the oil supply system. There is water in the fuel or combustion chamber, and the water is heated into water vapor by the heat released by combustion in the cylinder, which is discharged from the exhaust pipe to form white smoke.

3. The injection time is too late. Due to the late injection time, the temperature of the cylinder has dropped during the fuel injection, and part of the diesel fuel has not been burned into oil vapor, emitting white smoke.

4. Poor atomization of fuel injectors. Poor atomization leads to incomplete combustion of diesel, and the high-temperature exhaust gas discharged from the normal working cylinder merges in the exhaust pipe, resulting in white smoke.

5. The cylinder pressure is too low. Some diesel fuel turns into oil vapor without combustion, so white smoke is emitted from the exhaust pipe.

2. When the temperature is too low, the engine is prone to white smoke, and when the engine temperature rises, the white smoke gradually disappears, which is a normal phenomenon. If white smoke continues to emit, it means that there is water in the gasoline or water entering the cylinder, and it needs to be treated. 1. There is water in the gasoline, which is generally accompanied by the phenomenon of poor refueling, and the water tank does not lose water.

In this case, the water in the gasoline should be removed.

2. If there is always white smoke and water loss in the water tank, it may be caused by the ablation of the cylinder gasket and the water in the waterway entering the combustion chamber, so you should go to the repair shop to replace the cylinder gasket.

3. Solution:

1. First, use the fault self-diagnosis system of the engine ECU to check whether there is a fault in the engine control system.

2. Check that the EFI fuse (2OA) in the ECU power supply circuit is in good condition, that there is no open circuit or short circuit in each connecting wire, that there is no loosening of the connector and plug-in, and that the circuit is normal.

3. Remove the spark plugs of each cylinder, and the injector will be out of control, which will cause a large amount of liquid gasoline to enter the cylinder, causing the mixture to be too thick, unable to ignite and burn, and directly enter the exhaust pipe, and be discharged in the form of white smoke after mixing with the hot exhaust gas discharged from other cylinders. Due to the abnormal exhaust gas, a little longer will affect the normal operation of the oxygen sensor, and it is easy to cause the failure or failure of the oxygen sensor.

Question T engine suddenly emitted thick smoke (white smoke), it is recommended to check whether the engine of the car is water, generally the engine of the car is the main feature of water ingress.

The engine temperature is too low, the engine fuel injection time is not timely, the oil supply system is flooded, and the atomization of the fuel nozzle is not complete. All of the above reasons will cause the engine to emit white smoke, which indicates that the car has certain safety hazards, and if left unchecked for a long time, it will cause the vehicle parts to wear out too quickly.

Why is the engine emitting white smoke.

1.The engine temperature is too low. Due to the incomplete combustion of diesel, part of the diesel fuel turns into oil vapor, which is discharged from the exhaust pipe along with the exhaust fumes of the car, forming white smoke. This is normal. After the car has been working for a while, the engine temperature will come up.

2.The engine injection time is too late, resulting in the engine cylinder temperature has dropped during the fuel injection, and part of the diesel fuel becomes oil vapor and is discharged, forming white smoke.

3.Water in the oil supply system, because there is water in the combustion chamber of the engine, the water is heated in the cylinder to form steam, and white smoke comes out of the exhaust pipe.

4.The atomization of the nozzle is incomplete, the diesel fuel can not be fully combusted, and the high-temperature exhaust gas generated by the cylinder is dismantled at the exhaust pipe to form white smoke.

How to solve the problem of white smoke from the engine.

If the engine continues to emit white smoke after the temperature rises, it means that the gasoline is watery or the cylinder is flooded. For gasoline overflow, it is marked by poor refueling. In this case, the garage can remove moisture from the gasoline.

If there is a large amount of white smoke all the time and the water tank is leaking, it is likely that the cylinder gasket is damaged and the water from the waterway flows into the combustion chamber. In this case, you should go to a repair shop to replace the cylinder head gasket.

White smoke from the engine was accompanied by a burnt smell.

This is most likely due to an oil leak in the valve seal, which causes the exhaust pipe to increase in temperature and then turn red, so there is a burning smell, or the electronics inside the car instrument are burned out. For the sake of driving safety, it is recommended to go to the 4S shop immediately to diagnose the cause and carry out repairs.

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<><1. Gasoline contains water, and the engine is overcooled, resulting in the liquefaction of water vapor when cold, and white smoke appears.

2. If the fuel injector is unable to work normally due to the occurrence of the fuel injector or state failure, the oil sprayed by the fuel injector is not directly converted into steam after combustion.

3. If the cylinder liner or cylinder gasket fails, the coolant enters the cylinder, and a large amount of water vapor will be generated due to high temperature.

4. The oil supply timing adjustment is too small, and when the piston is not burning, the oil sprayed out of the slow fuel injector is less, which makes the amount of mixed gas less, which will reduce the combustion speed and prolong the combustion time, and produce white smoke.

White smoke is more common in winter, because the excavator has a low engine temperature when it is just started, and the fuel is discharged in the form of steam after being injected into the cylinder, which is a normal phenomenon.

First, the moisture in the fuel is high

There are two main factors that cause this situation, one is that the quality of the fuel purchased is very low, and the water content in the fuel is high; The second is that the oil-water separator is faulty and cannot separate the water in the fuel. In both cases, the fuel with moisture is burned in the cylinder, which produces a large amount of unburned hydrocarbons and water vapor, so the exhaust gas is white and appears to emit white smoke.

For this kind of failure, one is to ensure that the purchase of quality assured fuel, and the other is to check the oil-water separator frequently, silver to ensure that there is no fault, and the separated water can be removed in time.

2. Coolant enters the cylinder

The cause of this failure is similar to the previous one, and the reason why coolant can enter the cylinder may be due to damage to the cylinder liner or gasket. After the coolant enters the cylinder, it is mixed with fuel at high temperature and high pressure, which produces a large amount of water vapor, and white smoke will appear when it is discharged.

In this case, it is necessary to inspect and repair the starting Liangxian machine, carefully check whether the cylinder liner and cylinder gasket are cracked or damaged, and if damaged, replace it directly. There is also a way to determine whether the coolant has entered the cylinder, we can check the level height of the oil dipstick after the engine has stopped working for a period of time, if the oil volume has increased, it can indicate that the coolant has entered the cylinder.

Summary. Hello, the engine emits a lot of white smoke, which is caused by poor valve sealing, damaged fuel injectors and leaking cylinder gaskets. When a friend has a dripping oil or a poor seal, it will lead to incomplete combustion, a large amount of fuel is discharged from the exhaust pipe, resulting in white smoke, and poor valve sealing will cause insufficient compression, which will also lead to combustion problems.

When there is a problem with the sealing of the cylinder gasket, the antifreeze will be sucked into the cylinder to participate in the combustion, and there is a large amount of water vapor in the exhaust, which will also emit white smoke. To repair this fault, you can first check the valve clearance and valve seal, the valve does not find any problems, and check the fuel injection atomization and oil dripping phenomenon after removing the fuel injector, which is all fine, and the cylinder head needs to be removed and replaced again.

Hello, the engine emits a lot of white smoke, which is caused by poor valve sealing, damaged fuel injectors and leaking cylinder gaskets. When a friend has a dripping oil or poor sealing, it will lead to incomplete combustion, a large amount of fuel is discharged from the exhaust pin pipe, resulting in white smoke, and the valve seal belt is not strict will cause insufficient compression, which will also lead to combustion problems. When there is a problem with the sealing of the cylinder gasket, the antifreeze will be sucked into the cylinder to participate in the combustion, and there is a large amount of water vapor in the exhaust, which will also emit white smoke.

To repair this fault, you can first check the valve clearance and valve seal, the valve is not found to be a problem, and after removing the fuel injector, check the fuel injection atomization and oil dripping phenomenon, these stupid changes are all no problem, you need to remove the cylinder head and replace the cylinder gasket again.

The common cause of white smoke is the 3 dissipation parties I mentioned, a large amount of white smoke appears after the maintenance of the slag motive, considering the formal deviation caused by the injection time error and the problem caused by insufficient compression.

Could it be a matter of pressurization.

Regardless of the pressurization, the supercharger will have blue smoke even if it leaks oil, but not white smoke.