What s going on with the exhaust pipe exhaust oil of the new car diesel engine

<>Of course, some models are flawed by their own design, so that the exhaust drips oil, but basically it will not have any effect. If the injection oil is more serious, it must be abnormal, and it needs to be investigated according to the above.

But no matter what kind of fault factor is caused, we had better leave it to professionals to deal with it, after all, this process needs to be eliminated one by one, and no mistakes are allowed when disassembling and assembling, otherwise it will cause different troubles.

The reasons why the exhaust pipe of the diesel engine will discharge the oil: 1. There is too much oil in the crankcase, which exceeds the upper limit of the oil scale, resulting in too much oil splashing on the cylinder wall, which is easy to enter the combustion chamber. Second, the gap between the piston and the cylinder liner is too large, the cylindricity of the cylinder liner is out of tolerance, and the oil enters the combustion chamber.

3. The oil scraping ability of the piston ring decreases, resulting in poor oil scraping and burning and draining of the oil. Fourth, the piston ring has small elasticity, large light transmittance and uneven warping, which makes the side clearance and opening gap larger, or the piston "goes to the right place", and the oil enters the combustion chamber. 5. When installing piston rings, some piston rings will cause channeling oil.

This is due to the poor sealing of the cylinder, the oil escapes into the combustion chamber, part of it is involved in the fuel, and the rest is discharged from the exhaust pipe, and the exhaust has blue smoke. Diesel engine exhaust oil not only wastes oil, but also is often accompanied by power drops, incomplete combustion, carbon deposits in pistons, piston rings, cylinders, etc., and ablation valves.

Several reasons.

First, the power is naturally worn out, and the gap between the piston ring and the cylinder liner is too large, and second, whether the engine oil is added too much, resulting in excessive pressure in the engine compartment.

If it is regular and there is blue smoke, it is the burning of engine oil, which is mainly caused by excessive consumption of the live race and the live race ring. It's best to find a professional check-up, and there is no charge for seeing it anyway.

1.The booster is damaged, causing a large amount of oil to be drawn into the intake pipe 2The multi-cylinder valve oil seal is damaged, and a large amount of oil enters 3The oil passage of the cylinder head is ruptured, and a large amount of oil enters the engine. Note: A small amount of oil will be burned off when it enters the combustion chamber, only the exhaust pipe emits blue smoke.

Exhaust pipe injection oil may have the following conditions:1Valve oil seal damage 2The diesel engine runs idle for a long time 3The air filter is too dirty, causing the intensifier return oil to enter the exhaust manifold.

The exhaust under the diesel engine has reached the point where the oil is injected outward from the exhaust pipe. This shows that the exhaust is very serious. It is because the fitting gap between the piston and the cylinder liner is already too large, and the opening gap and backlash of the piston ring must not be small.

In this way, the exhaust gases after combustion will escape into the crankcase and bring the oil to the top. Hurry up and fix it.

1. The power is naturally worn out, and the gap between the piston ring and the cylinder liner is too large.

2. Whether the engine oil is added too much, resulting in excessive pressure in the engine compartment.

3. If it is not for the above two reasons, it is recommended to go to a local repair shop for maintenance.

The main reasons for exhaust pipe injection oil:

1. The piston ring is seriously worn;

2. Cylinder liner wear;

3. The piston ring has the same mouth;

4. The piston ring is installed upside down.

It should be that the oil is added too much, and after a few discharges, the oil volume decreases, so it is fine. Pay attention to the next time you add oil.

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Causes and solutions for exhaust oil in automobile exhaust pipes:

1.Cylinder liners, pistons, piston pins, and piston rings in automobiles can all have problems. Solution: Find the specific damaged part and replace it with a new part.

2.It may be that the air duct and valve stem of the automobile valve are seriously worn, resulting in poor sealing and large clearance. Then, there will be oil channeling. Solution: You need to go to the 4S shop for repair in time.

3.Some models may have flaws in their design, with oil droplets on the exhaust pipes. In general, if the situation is not obvious, it usually does not have a great impact on the vehicle.

But if there is a fuel injection, it is more serious. Solution: Go to a 4S shop or a professional repair agency to check and repair the car.

4.The turbocharger can be damaged, causing oil to drain from the exhaust pipe. Workaround: Go to the 4S shop to repair and inspect the turbocharger.

5.The crankshaft exhaust valve is aging, and the exhaust valve itself is a wearing part. When the vehicle has traveled a certain number of kilometers, it is normal for there to be problems with the exhaust valve. Solution: Replace the ventilation valve to solve the problem.

6.Too much oil in the air cleaner oil pan; Solution: Keep the right amount of oil.

The engine underexhaust oil is caused by the wear between the engine piston and the cylinder arm, which causes the underexhaust to be large and the oil injection phenomenon.

Fault inspection: After the engine is disassembled, the inspection confirms that the piston ring of the third cylinder of the engine is broken, the first piston ring is a trapezoidal ring, the measuring surface is millimeters, the standard value is millimeters, and one side of the piston ring has been uneven and seriously worn and broken.

Due to the piston ring causing the three-cylinder cylinder barrel to be strained, the third cylinder of the engine is strained below the upper dead center, about a centimeter long, wide and bright about a centimeter of groove strain, which can be seen to be the lower exhaust large injection oil symptoms caused by the damage of the engine three-cylinder.

The causes of oil drainage are:

1. The cylinder gasket is damaged.

2. The valve seal is not tight.

3. The gap between the valve and the tube is too large.

4. The tension of the piston ring is insufficient.

5. The piston ring is reversed.

6. The piston is embraced, and the newly repaired engine is not run in well, and the oil discharge phenomenon disappears naturally after a period of running-in.

7. The gap between the piston and the cylinder wall is large, and if the temperature cannot be reached for a long time, it is easy to cause oil channeling failure.

8. The low-speed ignition time is too long, so that the temperature of the engine rises too slowly.

9. The gap of the connecting rod bearing is too large, so that the splashed oil increases on the cylinder wall and is sucked into the combustion chamber.

10. The injection pressure of the fuel injection pump is too low, and the pressure of the fuel injector is too low (the so-called fuel injection nozzle drips).

Measures taken:

Before starting, confirm that the auxiliary equipment is under normal conditions, first turn on the oil pre-supply pump to pre-lubricate the main bearing lubrication system and piston lubrication system, and at the same time use the rocker oil hand pump to lubricate the rocker arm system to make its pressure meet the minimum requirements. Especially when the main engine is repaired or shut down for a long time, pre-lubrication should be carried out to ensure the formation of oil film between the moving parts of each system, and prevent the contact surface from wearing the parts due to dry friction, resulting in oil leakage. During operation, long-term low-load operation should be avoided as much as possible.

The engine oil should be checked regularly to ensure that its parameters are within the allowable range. The fuel tank should be cleaned frequently. For cylinders with oil leakage from the exhaust valve guide, the conduit sealing ring or the conduit should be replaced regularly to avoid oil draining.