How to Deal with Car Jerking When Accelerating?

[ElizaRose]

Methods to deal with car jerking when accelerating: 1. The main cause of the issue is the accumulation of carbon deposits in components such as the throttle body, intake manifold, and valves. These deposits absorb some gasoline when the engine is cold. Once the engine warms up, the gasoline evaporates, leading to an overly rich air-fuel mixture during idle, which results in unstable idle speed. 2. It is necessary to inspect not only the throttle body and idle control valve but also the carbon deposits and dirt in the intake manifold. Excessive buildup can alter the cross-sectional area of the air passage, preventing the control unit from accurately regulating the idle air intake. This can cause the air-fuel mixture to become too rich or too lean, leading to abnormal combustion and engine jerking. 3. Additionally, it is important to check if the carbon canister is malfunctioning.