What causes oil leakage from the valve cover of the Elantra?

[DeLeila]

The reason for oil leakage from the valve cover of the Elantra is the aging of the gasket. Severe aging of the timing belt: The timing belt is a crucial component of the engine's valve timing system, connecting to the crankshaft and ensuring accurate intake and exhaust timing through a specific gear ratio. If the timing belt is damaged or breaks, the engine will definitely fail to start. Moreover, if the belt breaks while the engine is running at high speed, the intake and exhaust valves may be in operation, and the piston's strong impact force could directly damage them. In more severe cases, the cylinder head and piston might also be ruined due to the sudden belt breakage. Water pump leakage: As an essential part of the engine's water circulation system, any malfunction in the water pump will disrupt the cooling cycle, leading to overheating. Severe overheating can directly cause engine damage.