What Causes Jerking Sensation After Refueling a Car?
3 Answers
Jerking sensation after refueling is caused by substandard fuel quality, incomplete combustion, or faults in components like spark plugs and ignition coils, leading to cylinder misfires. It's important to promptly visit a repair shop for diagnosis. Reason for filling up the tank during first refueling: During the first refueling, always fill until the pump nozzle "clicks off." Once the nozzle clicks, do not add more fuel. This practice is to verify the accuracy of the new car's fuel gauge. Reason for not filling the tank completely after the first refueling: Overfilling leaves no space in the upper part of the fuel tank. Especially in summer, gasoline vapors have nowhere to escape, which can cause fuel sputtering. It also submerges the tank's vent outlet in gasoline, forcing liquid fuel into the carbon canister and causing damage to it.
I have a family car that I've been driving for three to four years, and I've experienced sudden jerking motions after refueling, especially during acceleration—those rough surges were really nerve-wracking. Most of the time, this is caused by filling up with low-quality gasoline, which contains impurities that lead to uneven combustion in the engine. Sometimes, water from the gas station's storage tank leaks into the fuel tank, mixing with the fuel and causing clogged fuel injectors. Another possibility is that sediment in the fuel tank gets stirred up during refueling and blocks the fuel filter. My suggestion is that if the issue doesn’t improve after driving for a while, first switch back to a reliable gas station. If that doesn’t work, go get the fuel injection system cleaned. Using reputable, big-brand gasoline in daily driving can prevent this problem—don’t try to save money by cutting corners, as it could lead to bigger troubles. I remember once when I switched to 95-octane fuel, the issue disappeared, and I finally got to experience the peace of mind that comes with smooth driving.
After years of driving, I've encountered engine stuttering after refueling multiple times, which is usually due to the vehicle's computer needing time to adapt to the new fuel. Switching to gasoline with a different octane rating requires the engine control unit to readjust fuel injection quantities and ignition timing, leading to intermittent power delivery at low speeds. Another common cause is the fuel pump being affected; after refueling, its increased workload may result in unstable fuel supply. It's advisable not to change fuel brands too frequently and to drive at low speeds for a while after refueling to allow the system to self-adjust. If the stuttering persists, check if the fuel filter needs replacement. Experience tells me that maintaining consistent refueling habits can minimize such minor issues.
