What Causes Jerking Sensation After Refueling a Car?
1 Answers
Jerking sensations in a car are definitely related to two major components: the engine and the clutch. Possible factors causing jerking during low-speed acceleration after refueling include engine oil passage blockage, automatic transmission startup, or transmission damage. Below are the specific details: 1. Engine Oil Passage Blockage: If a 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 volume decreases, ignition weakens, or fuel injection reduces, the power output will be insufficient, leading to jerking sensations. 2. Automatic Transmission Startup: Jerking during the startup of an automatic transmission car is normal. If you want to accelerate quickly while driving, you need to press the accelerator deeply. At this point, the automatic transmission will downshift to increase engine speed. When the speed reaches a certain level, it upshifts again. Since the speed will drop significantly after upshifting, a relatively noticeable jerking sensation occurs. 3. Transmission Damage: If the jerking is more severe than usual, consider whether the transmission is damaged. For example, persistent dirt and impurities inside, especially when accumulated in the valve body, can form blockages, preventing effective regulation of oil pressure and causing jerking, impact, or slippage issues.