What Causes a Car to Shake Like Convulsions with Severe Power Loss?

[OCayden]

The following are the reasons for car shaking: 1. Reason one: A dirty air filter can prevent sufficient air from entering the engine cylinders, leading to an imbalance in the air-fuel mixture ratio, which results in engine power loss and shaking. 2. Reason two: If the throttle body is too dirty, it may not close properly, causing a lean air-fuel mixture at idle, which leads to engine power loss and shaking. 3. Reason three: Excessive carbon deposits inside the engine can absorb some fuel during startup, resulting in a lean mixture. When the carbon deposits become saturated with gasoline, the engine starts to operate normally. However, when the mixture is ignited, the gasoline absorbed by the carbon deposits is drawn back into the cylinders by vacuum suction, causing an overly rich mixture. This alternating lean and rich condition leads to engine shaking.