What Causes Jerking When Accelerating?

[VanKevin]

Here are the specific reasons for jerking when accelerating: 1. Normal phenomena: (1) Manual transmission models: When driving in a semi-clutch state, accelerating or decelerating will cause jerking. The deeper the accelerator is pressed, the more pronounced the jerking. (2) Automatic transmission models: There will be slight jerking when accelerating and upshifting, and it feels more obvious when forcing a downshift and then upshifting with a heavy throttle. 2. Abnormal phenomena: (1) Excessive carbon deposits: Excessive carbon deposits on the throttle, fuel injectors, and intake manifold. Many faults are caused by carbon deposits, and some vehicles may experience jerking due to carbon deposits. It is recommended to regularly clean carbon deposits. (2) Poor fuel quality: Leads to incomplete combustion. It is recommended to use higher-quality gasoline from reputable gas stations. (3) Spark plug failure: Causes misfiring, etc. It is necessary to go to a repair shop for inspection and timely repairs to avoid more safety hazards.