What are the effects of a damaged PVC valve?

[PatrickMarie]

If the PVC valve is damaged, it can cause poor ventilation in the crankcase, leading to high pressure. This high pressure can reduce the sealing between the cylinder walls and pistons. During the intake stroke, this high pressure is compressed into even higher pressure, forcing some engine oil from the cylinder walls through the tiny gaps between the cylinder walls and pistons into the combustion chamber, where it participates in combustion. Additional details are as follows: 1. Introduction: PCV stands for the Positive Crankcase Ventilation system. The PCV valve consists of a valve body, valve, valve cover, and spring, and is non-disassemblable. 2. Components: The PCV system mainly includes ventilation hoses and the PCV valve. Typically, one ventilation hose connects the air cleaner to the valve cover, while another connects the PCV valve to the intake manifold. The PCV valve consists of a plunger-type valve and spring, located on one side of the intake manifold. The vacuum level in the intake manifold determines the opening and closing of the PCV valve, as well as the extent of its opening. The degree to which the PCV valve opens or closes, in turn, determines the amount of blow-by gases that are recirculated into the intake manifold for combustion.