The main cause of damage to the oil pressure gauge
First, the viscosity of the oil is too low;
Second, the oil filter filter screen or the oil filter filter element is blocked;
Third, the elastic force of the pressure limiting valve and the return valve spring is weakened or broken, or the valve joint surface is not tightly sealed, resulting in oil leakage and pressure relief;
Fourth, the main bearing or connecting rod bearing clearance is too large;
Fifth, the oil pump is not working properly.