What Causes the Jerking Sensation When Releasing the Throttle in a BMW?

[EmiliaLynn]

Introduction to the reasons for jerking sensation when releasing the throttle in a BMW: 1. Engine oil passage blockage: The combustion of fuel, which is also the power source of the engine, is determined by the engine's ignition, air intake, and fuel injectors. If the air intake decreases, ignition weakens, or the amount of fuel injected reduces, the power output will be insufficient, leading to a jerking sensation. 2. Jerking sensation during acceleration in automatic transmission vehicles: When you want to accelerate quickly, you need to press the throttle deeply. At this time, the automatic transmission will automatically downshift to increase the engine speed. When the speed reaches a certain level, it will upshift. After upshifting, the speed will drop significantly, resulting in a relatively obvious jerking sensation. This situation is more common in automatic transmission models with fewer gears, such as 4-speed automatic models.