What are the causes of excessive oil pressure?

[LeilaniMarie]

The main causes of excessive oil pressure are: 1. The oil viscosity is too low; 2. The oil strainer screen or oil filter element is clogged; 3. The spring force of the pressure relief valve or return oil valve is weakened or broken, or the sealing surface of the valve is not tight, causing oil leakage and pressure relief; 4. Excessive clearance in the main bearing or connecting rod bearing; 5. Poor oil pump performance. Additional information: 1. The oil pressure of gasoline engines is usually maintained at 0.2-0.5MPa. 2. Within the commonly used speed range of the engine, the oil pressure of gasoline engines is usually maintained at 0.2-0.5MPa, while that of diesel engines is usually maintained at 0.290-0.59MPa. 3. During engine operation, normal oil pressure must be maintained. If the oil pressure is too low, the friction surfaces will wear faster due to insufficient lubrication; if the oil pressure is too high, it is easy to damage the oil seals and oil pipes, and consume engine power.