What are the reasons for severe engine shaking in a car?
2 Answers
The reasons for severe engine shaking in a car are: 1. If the car's ignition system malfunctions, it can cause poor ignition system performance and suboptimal spark plug firing. It is recommended to check the condition of the spark plugs, high-voltage wires, and ignition coils; 2. When there is excessive carbon buildup in the cylinders, throttle body, spark plugs, or intake system, the ignition energy, intake efficiency, and air-fuel mixture ratio can be affected, leading to unstable power output; 3. Poor fuel quality can damage engine performance, resulting in idle shaking. The solution is to promptly clean the car's throttle body, which can generally resolve common issues. If the problem persists, the car should be sent to a 4S shop for repair.
Severe engine shaking in a car can have several key causes. The most common issue is with the ignition system, such as aging spark plugs or damaged ignition coils, which can cause a cylinder to misfire, leading to overall engine vibration. The fuel system is also critical; clogged fuel injectors or a dirty fuel filter can result in an unstable air-fuel mixture and incomplete combustion, naturally causing vibrations. If the engine mounts are cracked or loose, they can't secure the engine properly, making the shaking more noticeable during operation. Faulty sensors, like the oxygen sensor, can affect idle control and worsen the shaking. Other factors, such as leaks in the intake system or a clogged air filter restricting airflow, can also lead to imbalance. It's recommended to regularly inspect these components—don't underestimate shaking, as it can accelerate wear on other parts and increase repair costs. If severe shaking is detected, stop the car for inspection or take it to a repair shop to ensure safe driving.
