What is the problem when the car shakes during acceleration?
2 Answers
When the car shakes during acceleration, it is usually due to damaged spark plugs, and replacing them with new ones should resolve the issue. Spark plugs, commonly known as ignition plugs, function by discharging the high-voltage pulse electricity sent from the high-voltage wires (spark plug wires), breaking down the air between the two electrodes of the spark plug, and generating an electric spark to ignite the air-fuel mixture in the cylinder. The main types of spark plugs include: standard spark plugs, extended tip spark plugs, electrode spark plugs, seat-type spark plugs, surface gap spark plugs, and surface discharge spark plugs. Spark plugs work in conjunction with the ignition system and fuel supply system to enable the engine to perform work, and they significantly influence the engine's performance.
I've encountered similar issues during long-distance driving. Shaking during acceleration can stem from several root causes. The most common are engine-related faults, such as eroded spark plugs or aging ignition coils leading to uneven combustion due to cylinder misfires. Fuel supply system problems like clogged fuel pumps or obstructed fuel injectors causing uneven fuel delivery can also result in jerky acceleration. Unbalanced tires or uneven tread wear exacerbate vibrations during high-speed acceleration, while worn drive shafts or CV joints may induce lateral sway. The compounding of these faults increases the risk of losing control, making early detection and resolution crucial. I recommend checking spark plug conditions and tire wear patterns after parking. If unresolved, seek professional diagnosis at a repair shop - proper maintenance ensures smooth, comfortable and safe driving while avoiding the hassle of roadside breakdowns.
