What Causes the Zizzing Sound When Accelerating the Car?

[LaElias]

When a car makes a zizzing sound during acceleration, it is most likely caused by issues with the engine oil, which may require replacement. Another less common possibility is damage to the car's half-shaft, which can cause abnormal noises when pressing the accelerator. For a precise diagnosis, it is recommended to visit a repair center. Below are some related details: 1. Definition of the throttle: In the internal construction of an engine, the device used to control the fuel supply in an internal combustion engine is called the throttle. 2. Function of the throttle: The throttle can adjust the opening of the throttle valve in the engine, thereby controlling the amount of combustible mixed gas, which changes the engine's speed and power, allowing the car to accelerate or decelerate according to driving needs. 3. Advantages of electronic throttle: The electronic throttle transmits the degree of pedal depression through a position sensor, enabling electronic control of the throttle. The use of an electronic throttle is highly precise and avoids mechanical wear issues.