Why Does the Engine Shake While Driving?
2 Answers
Reasons for engine shaking while driving: 1. The engine mount's function is to reduce vibration and provide cushioning during engine operation, as well as to secure the engine. Once the engine mount becomes aged or loose, engine shaking becomes noticeably abnormal. 2. Excessive carbon buildup inside the engine reduces the car's ignition energy and intake efficiency, ultimately leading to symptoms such as engine shaking and sluggish acceleration. 3. Using incompatible fuel octane ratings can result in decreased car output power and reduced performance. Alternatively, if the fuel tank cap vent is blocked, or if the fuel tank switch, fuel filter, or the fuel line between the fuel tank and carburetor are partially obstructed, the required fuel supply cannot be met, leading to an overly lean air-fuel mixture and engine shaking. 4. If the air filter is not cleaned in time after prolonged use and becomes clogged, insufficient air intake will cause an overly rich combustible mixture, reducing engine power. For vehicles equipped with a turbocharger, any malfunction in the turbocharging device can also cause the engine to shake during acceleration.
Engine shaking usually has several common causes. I think the most common is an issue with the ignition system, such as aging spark plugs or damaged high-voltage wires, causing a cylinder to misfire. This makes the engine run unevenly. Then there's uneven fuel supply; clogged fuel injectors or a dirty fuel filter can disrupt fuel delivery, leading to shaking. On the mechanical side, worn or loose engine mounts can transmit vibrations to the body, especially noticeable at idle or during acceleration. Electrical problems should not be overlooked either, like a faulty mass airflow sensor affecting the air-fuel mixture, and high temperatures can worsen the shaking. It's recommended to first read the trouble codes. If the issue persists, check the spark plugs and fuel system as soon as possible. Long-term neglect can lead to increased carbon buildup in the engine and even damage internal components. Regular maintenance of spark plugs and oil changes is best to prevent small issues from becoming major problems. Checking simple areas yourself is fine, but for complex parts, it's safer to seek professional repair, as shaking directly affects driving stability.
