What Causes Jerking Sensation in Cars After Using Low-Quality Fuel?
2 Answers
The reasons for jerking sensation in cars after using low-quality fuel are as follows: Speed Mismatch: The jerking is caused by a mismatch between the engine speed and the current vehicle speed, meaning there is a speed difference between the engine speed and the clutch plate speed. When shifting gears and releasing the clutch, if the engine speed does not match the current vehicle speed, this speed difference will cause a jerking sensation. During driving, if you want to accelerate quickly, you need to press the accelerator pedal deeply. At this point, the automatic transmission will automatically downshift to increase the engine speed. Upshifting at High RPM: When the RPM reaches a certain level, the transmission will upshift. After upshifting, the RPM will drop significantly, resulting in a relatively noticeable jerking sensation. If you want to maintain good acceleration performance, you need to press the accelerator pedal deeply. The automatic transmission will shift into a higher gear at a higher vehicle speed, making the gear-shifting jerking sensation more pronounced.
Recently, my car started jerking and shaking after I filled it with cheaper fuel, making the ride extremely unpleasant. Upon closer thought, the excessive impurities in the low-quality fuel clogged the fuel injectors, causing uneven fuel spray and making the engine misfire. Additionally, the unstable combustion temperature of such fuel tends to delay spark plug ignition, making the car feel like it's stuck when accelerating. A mechanic friend once told me that prolonged use of such fuel accelerates engine component wear and makes cleaning more troublesome. Now I've learned my lesson—I only choose reputable gas stations and check the fuel quality report after refueling. Otherwise, the money saved on fuel would be far outweighed by repair costs.
