Why Does the Classic Focus Engine Make Abnormal Noises?

[LePenelope]

Here are the reasons for abnormal noises in the Classic Focus engine: 1. Poor fuel quality causing loud engine noise: When owners add low-quality fuel, the combustion condition inside the engine deteriorates, leading to strong vibrations and noise during operation. If the engine noise increases due to poor fuel quality, timely replacement with high-quality fuel can resolve the issue. 2. Loose engine mounts causing loud engine noise: The engine needs to be secured, usually supported and fixed by engine mounts. Over time, the components securing the engine can age and loosen, potentially causing noise during operation. It is necessary to inspect the engine's mounting components. If there are no special circumstances, tightening the components can alleviate the engine noise. 3. Loose plastic parts in the engine compartment causing noise: There are also some plastic components in the engine compartment. When these plastic parts become loose, the noise may increase. If the noise is confirmed to come from plastic components, tightening them can also be an effective adjustment method.