What Causes the Jerking Sensation in a Car?

[EmilioDella]

Car jerking is related to two major components: the engine and the clutch. There are many factors that may cause jerking during startup or low-speed acceleration, such as clogged engine oil passages, insufficient or deteriorated transmission fluid, unskilled coordination between the clutch and accelerator, or releasing the clutch too quickly during startup. Below is an introduction to the causes of jerking: 1. Related to the engine: If the car experiences jerking while driving, the engine is certainly involved. The engine's ignition, air intake, and fuel injectors collectively determine fuel combustion, which is the source of the engine's power. If the air intake decreases, ignition weakens, or fuel injection reduces, the power output becomes insufficient, leading to the jerking sensation. 2. Normal circumstances: Jerking during startup in an automatic transmission car is normal. This is because, except for CVT continuously variable transmissions, other transmissions will exhibit some degree of jerking.