Vehicle Shakes When Lightly Pressing the Accelerator
2 Answers
Vehicle shaking when lightly pressing the accelerator is abnormal and may be caused by faulty spark plugs or clogged fuel injectors. Here is a detailed introduction about automotive spark plugs: 1. Overview: Automotive spark plugs, commonly known as sparkers, function by discharging the high-voltage pulses sent from the high-tension leads (spark plug wires), breaking down the air between the two electrodes to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder. They can generally be categorized into standard spark plugs and insulator-protruding spark plugs. 2. Others: The fundamental conditions for a high-performance engine include high-energy stable sparks, a uniformly mixed air-fuel mixture, and a high compression ratio. The key component of a spark plug is the insulator. The insulator must possess excellent mechanical properties, high voltage resistance, high-temperature impact resistance, and chemical corrosion resistance. Ordinary spark plugs are typically made of alumina-based ceramics.
Over the years of driving my old car, I've encountered quite a few issues with shaking when lightly pressing the accelerator. Personally, I think the most common causes are problems with the spark plugs or ignition coils. Worn-out spark plugs can lead to unstable ignition, making the engine shake like it's dancing during slight acceleration. It could also be due to a dirty throttle body, where excessive carbon buildup affects air intake and increases fuel consumption. I've tried cleaning the air filter myself, and sometimes it helps alleviate the issue. It's best not to delay fixing it, as prolonged shaking puts extra strain on the engine and can lead to bigger problems, especially at high speeds, which can be more dangerous. Regular maintenance checks on these components, such as replacing spark plugs every 20,000 kilometers, can save you both trouble and money. Last time my car was shaking, replacing the spark plugs fixed it, costing me less than 200 yuan.
