What Causes Engine Shaking When Accelerating?

[LeLyla]

Here are the reasons for engine shaking during acceleration: 1. The most common issue when experiencing shaking during acceleration is damaged spark plugs. Worn spark plug electrode gaps result in insufficient spark, leading to incomplete combustion of the air-fuel mixture and causing shaking during acceleration. Additionally, cracks in the ceramic part of the spark plug can prevent sparking, causing one cylinder to misfire and resulting in acceleration shake. 2. Poor fuel quality can lead to inadequate atomization by the fuel injectors, causing incomplete combustion of the air-fuel mixture in the cylinders, which may also result in idle shaking. It is recommended to use higher-grade gasoline after consuming the current tank and perform a fuel system cleaning. 3. The most common cause of shaking while driving is uneven tire tread on the four wheels, such as bulges or foreign objects. Additionally, loose wheel bearings can also cause vehicle shaking during driving.