What is the cause of low oil pressure failure

The reasons for this situation are insufficient oil, wear or damage of the oil pump, aging and deterioration of the engine oil due to high engine temperature, blockage of the filter, damage or improper adjustment of the pressure limiting valve, low viscosity of the oil, and failure of the pressure sensor, etc. .

　　

When the red oil pressure warning light on the instrument panel lights up, you must immediately stop the vehicle for inspection to avoid major mechanical accidents. In this case, first check whether the oil sensor, oil pressure gauge, and the valve rocker shaft end cover just covered are blocked. Secondly, check the pressure limiting valve of the oil pump to see if there is any problem with the internal gap and gear gap, and repair it after it is discovered in time. Also, when we are checking the oil pressure, we should pay attention to remove the wire of the oil sensor first, then turn on the ignition switch, and ground the removed wire to the cylinder block. If the needle of the oil gauge deflects to the end, it means that the oil is The gauge is in good condition, if the deflection is too small, the oil gauge may be bad.