What are the symptoms of a faulty oil-gas separator?

[ODylan]

The symptoms of a faulty oil-gas separator are: it loses its oil-gas separation function, sucking in oil along with air, which can lead to oil entering the intake tract and combustion chamber, causing oil burning. The role of the oil-gas separator is to separate the oil from the gases expelled by the crankcase, reducing the emission of oil from the crankcase breather to the outside of the engine. When a car burns oil, the exhaust will produce a large amount of smoke, appearing white at idle and blue during rapid acceleration or heavy throttle, accompanied by a peculiar odor from the exhaust pipe. If left unrepaired, a significant amount of oil can enter the cylinder liner in the later stages. Since liquids are incompressible, the piston and cylinder liner can be damaged, leading to what is known as engine seizure.