What is the reason for the sudden illumination and then disappearance of the car's oil pressure warning light?
1 Answers
The reasons for the sudden illumination and then disappearance of the car's oil pressure warning light are as follows: 1. Excessive oil viscosity: The viscosity of the oil is closely related to its quality. The higher the viscosity, the better the oil's resistance to high temperatures, and vice versa. 2. Pressure relief valve blockage or improper adjustment: To prevent excessive oil pressure in the lubrication system, which increases engine power consumption and causes oil leaks at sealed connections, a pressure relief valve is installed on the main oil passage or oil pump. 3. Insufficient oil quantity: If the oil quantity is insufficient, the oil pump's output will decrease or fail to pump oil due to air intake, leading to a drop in oil pressure. This results in increased wear on the crankshaft and bearings, as well as the cylinder liners and pistons due to poor lubrication. 4. Engine overheating: Excessive scale in the engine cooling system, poor heat dissipation, prolonged overload operation, or delayed fuel injection timing can all cause the engine to overheat. 5. Oil filter blockage: When the oil filter is blocked and cannot circulate, the bypass valve on its base opens, allowing oil to bypass the filter and enter the main oil passage directly.
