What are the reasons for the oil pump not pumping oil?

[DeBrooklyn]

The oil pump may fail to pump oil due to reasons such as low oil level, excessively low oil temperature, insufficient suction force of the oil pump, or blockage in the suction pipe. Below are the detailed reasons why an oil pump may not pump oil: Low oil level: If the oil level is too low, it exposes the suction pipe. When the oil level is too low, the suction pipe of the oil pump is exposed above the oil surface, making it impossible to draw oil even with strong suction. It could also be due to the suction pipe being positioned too high, preventing the oil pump from drawing oil. Immediate action is required: add engine oil, stop driving, turn off the engine, park the vehicle on a flat surface, wait for about ten minutes, open the oil filler cap, and add the same type of oil as originally used until the oil level reaches the midpoint between the upper and lower marks on the dipstick, then stop adding. Excessively low oil temperature: When the oil temperature is too low, the viscosity of the oil decreases. Under normal temperatures, oil exists in a semi-solid state, but as the temperature drops, it becomes more solid. This makes it difficult for the oil pump to draw oil, which is why the oil pump fails to pump oil. It is important to inspect related components promptly and resolve the issue quickly to prevent minor problems from escalating into major failures. Insufficient suction force of the oil pump: If the suction force of the oil pump is not strong enough, it cannot effectively draw oil from a lower level to a higher one. The oil pump relies on strong suction to draw oil through the suction pipe. If the suction force is inadequate, the oil cannot be pumped efficiently. It is recommended to check the voltage of the fuel pump. For imported or joint-venture compact cars, the oil pump may not be repairable and might need replacement. Blockage in the suction pipe: A blockage in the suction pipe can prevent the oil pump from drawing oil. The smooth operation of the suction pipe is essential for the oil pump to function properly. If the suction pipe is obstructed by foreign objects, the oil pump will fail to pump oil. Inspect the suction pipe and remove any obstructions.