What is the reason for the fuel injection in the engine exhaust pipe?

It is likely that the crankshaft ventilation valve is aging, so it is recommended that the user replace the crankshaft ventilation valve.

Secondly, it is also possible that the valve stem and valve guide are seriously worn and the gap is too large, which leads to oil leakage. As for how to repair it, it is necessary to find the damaged position at this time and then replace it. Don't wait until it breaks down, the consequences will be unimaginable.

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It is normal to have a small amount of oil at the outlet of the exhaust pipe. It is not normal for the exhaust pipe to drip oil seriously. The exhaust pipe is usually connected to the crankcase or valve cover.

If the piston assembly in the engine is not tightly sealed, the compressed gas in the combustion chamber will flow down the cylinder wall, which will lead to the pressure increase in the engine crankcase.

The increased air pressure will be discharged with the oil when it is discharged through the exhaust pipe. In addition, when the engine oil temperature becomes higher, the engine crankcase pressure will also increase.

In addition, some oil pressure is too high, which will also lead to oil discharge from the exhaust pipe. Then there are some barriers between the engine exhaust pipe and the engine interface, which will be caused if the barriers are damaged.

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