The car shook and there was a flash of oil.

Causes of automobile jitter and oil light flashing;

1, the oil quantity is insufficient, so that the oil quantity of the oil pump is reduced or the intake air cannot pump oil, resulting in a drop in oil pressure;

2. If the engine temperature is too high, it is easy to dilute the engine oil, and a large amount of engine oil will be lost from the mating gap, resulting in a decrease in engine oil pressure;

3. When the parts of the oil pump are damaged or the clearance is too large due to wear and assembly problems, the oil pump will fail to produce oil or the oil quantity is insufficient;

4. Improper fit clearance between crankshaft and large and small tiles will increase oil pressure if it is too tight, and reduce oil pressure if it is too loose;

5. The oil sensor is damaged, and the oil filter and oil suction tray are blocked, which will also reduce the oil pressure;

6. Damage or failure of the oil return valve: If the spring of the oil return valve in the main oil circuit is fatigued, softened or improperly adjusted, the mating surface between the valve seat and the steel ball is worn or stuck by dirt, the oil return volume will increase obviously and the oil pressure in the main oil circuit will also decrease;

7. Improper selection of engine oil. If the oil is used incorrectly or the brand is not selected properly, the leakage will increase due to the low viscosity of the oil when the engine is running, thus reducing the oil pressure.