Why does the car jerk while driving?
2 Answers
Possible causes include ignition system failure, such as worn-out spark plugs, issues with cylinder wires, malfunctioning fuel injectors, poor fuel quality, clogged fuel lines, prolonged lack of engine throttle cleaning, or transmission problems. Below is an introduction to common car fault knowledge: Car abnormal noises: As the vehicle ages, improper operation, maintenance quality, and environmental factors can lead to wear, damage, looseness, aging, poor contact, short circuits, or open circuits in various components. These issues result in abnormal sounds during operation, such as knocking, high-speed whistling, part friction noises, or gear grinding. Approximately 70% of car faults manifest through abnormal noises. Therefore, identifying general patterns and characteristics from these intuitive symptoms can greatly facilitate car fault diagnosis. Abnormal car performance: This is a common fault phenomenon, including difficulties in starting, automatic stalling, generator failure, gear shifting issues, steering failure, or brake failure.
Recently, my car had a similar issue where it drove jerkily like dancing. The most common cause is poor ignition due to carbon buildup or aging spark plugs, especially noticeable during sudden acceleration. Last time, I replaced all four spark plugs, and the problem was solved. A clogged fuel filter can also cause this issue, as insufficient fuel supply makes the engine struggle. Additionally, if the transmission fluid hasn't been changed for too long, gear shifts may become jerky. For manual transmissions, a slipping clutch disc can suddenly cut power. By the way, if the throttle feels like stepping on cotton, the throttle body might be unusually dirty—a spray of cleaner should help. If these checks don't resolve the issue, remember to scan for trouble codes with a diagnostic tool for the most reliable solution.
