What Are the Reasons for a Large Amount of Engine Oil Spraying from the Exhaust Pipe?

[OJayla]

There are many reasons that can cause a sudden large amount of engine oil to spray from the exhaust pipe. The most likely cause is the aging of the crankcase ventilation valve. Secondly, excessive wear of the piston, cylinder liner, or piston rings can lead to a loss of the engine's original sealing performance, allowing engine oil to easily enter the combustion chamber and subsequently be expelled with the exhaust gases through the exhaust pipe. Finally, severe wear between the valve stem and valve guide can result in oil spraying both upwards and downwards. Solutions for oil spraying from the exhaust pipe: If the ventilation valve is aging, the only solution is to replace it. The ventilation valve itself is a wear-prone component, and it is normal for issues to arise after the vehicle has been driven for a certain mileage. If there is excessive wear of the piston, cylinder liner, or piston rings, replacing the corresponding components can resolve the issue. Additionally, vehicle owners should regularly change the engine oil to minimize engine wear.