What Causes Loud Engine Shaking Noise?
3 Answers
The causes of loud engine shaking noise are as follows: Severe engine carbon buildup: When there is excessive carbon buildup inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making ignition difficult. Ignition system issues: Check the working condition of spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or improper spark plug firing can also cause such fault symptoms. Aging engine components: Engine shaking in cars is also related to aging engine mounts (also known as rubber mounts). Severe engine shaking may be associated with excessive carbon buildup, ignition system failures, and other reasons.
I just fixed a similar issue with my own car. Generally, there are a few key reasons for engine shaking and excessive noise. Worn-out spark plugs or increased gap is a common culprit, causing misfires and noticeable shaking during acceleration. A faulty ignition coil can also cause trouble, leading to a cylinder not working properly and increased noise. The fuel system shouldn't be overlooked either—clogged fuel injectors or a dirty fuel filter can affect fuel supply. Worn engine mounts can transmit vibrations throughout the cabin, making highway driving even scarier. Last time my car shook badly, it turned out to be a vacuum leak, letting air mix in and disrupt combustion. These issues, if left unresolved, can damage other components. I recommend checking the spark plugs and coils first—they're not too hard to replace yourself, but for safety, it's best to visit a proper repair shop to scan for fault codes.
I've discussed this topic with fellow car enthusiasts and found that the reasons for engine shaking commonly encountered by young people are straightforward, usually due to burnt spark plugs or faulty ignition coils. Excessive carbon buildup on spark plugs can affect performance and increase noise. Issues with the fuel system, such as poor gasoline quality or clogged fuel injectors, are also common, and sometimes simply replacing the air filter can solve the problem. If the engine mounts are loose, the car shakes like it's dancing at idle and makes a lot of noise. I've experienced it myself—after adding low-quality fuel, the engine shook nonstop and made a harsh noise. Don't ignore these minor issues; regular checks of filters and spark plugs are key. DIY replacement of new parts is convenient and cost-effective, but if you're unsure, it's best to visit a shop and ask a professional to avoid costly engine repairs.
