What Causes Vehicle Body Shaking When Accelerating Hard?

[LeDaniella]

Vehicle body shaking when accelerating hard can be caused by: 1. Damaged spark plugs, excessive wear of the spark plug electrode gap leading to insufficient spark energy, incomplete combustion of the air-fuel mixture causing shaking during acceleration, or cracks in the ceramic part of the spark plug resulting in no spark; 2. Poor fuel quality, leading to inadequate atomization by the fuel injectors and incomplete combustion of the air-fuel mixture in the cylinders; 3. Faulty oxygen sensor. The throttle, also known as the accelerator or air valve, is a control device that regulates the engine's power output. It controls the opening of the carburetor's throttle valve to adjust the cylinder's filling volume, thereby determining the engine's output power.