What are the causes of car shaking during acceleration?
2 Answers
Car shaking during acceleration can be caused by: 1. Loose connection between the transmission and chassis; 2. Uneven engagement of the clutch pressure plate and clutch friction disc; 3. Insufficient throttle input or rapid clutch release; 4. Malfunctions in the intake system, ignition system, or fuel system; 5. Clogged fuel injectors. The hazards of car shaking during acceleration include: 1. Damage to the spark plugs, resulting in poor ignition; 2. Increased carbon buildup in the fuel injectors; 3. Blockage of the throttle valve and intake manifold; 4. Accelerated aging of engine components; 5. Damage to the clutch pressure plate; 6. Increased engine load.
I know exactly what you mean about the body shaking during acceleration. When I drove a manual transmission and encountered this issue, I found it was caused by excessive throttle input during semi-engagement, leading to clutch plate wear and resulting in slipping and vibration. If you feel steering wheel vibrations during acceleration in an automatic car, it's most likely due to unbalanced tires—especially if you've changed tires without balancing them. Worn or broken engine mounts can also make the entire engine compartment shake, feeling like sitting on a massage chair during hard acceleration. Another time, it was due to excessive spark plug gaps, causing noticeable misfiring and shaking during acceleration, with intermittent exhaust sounds. Don’t overlook fuel quality—after filling up with subpar 92-octane gas from a small station, my car would shudder during acceleration, and it was only resolved after cleaning the fuel system. I recommend checking the simplest things first: front wheel balance and spark plugs.
