What Causes Engine Shaking During Acceleration?

[ColemanMarie]

There are several main reasons for engine shaking during acceleration: 1. If you notice slight shaking or deviation of the vehicle body while driving, it is usually caused by tire issues, possibly due to poor tire balance. The owner should visit a repair shop for a four-wheel alignment and dynamic balance. 2. It may be caused by deformation or imbalance of the drive shaft. This situation is more common in vehicles that have experienced chassis collisions. 3. Increased carbon deposits in the throttle body, intake tract, valves, and other components. When the engine is cold, these deposits absorb some gasoline. After the engine warms up, the gasoline evaporates, causing an overly rich air-fuel mixture during idle, which leads to unstable idle speed when the engine is warm.