What causes the rattling noise from the EA888 timing cover?

[DeJade]

The causes of the rattling noise from the timing cover are as follows: 1. The timing chain tensioner has malfunctioned; 2. It could also be that the timing chain has stretched from prolonged use. Here are other situations where the EA888 engine produces abnormal noises: 1. Since the EA888 is a direct-injection engine, it generates certain noises during operation. The fuel injectors can cause vibrations under high-pressure injection, resulting in abnormal noises when idling or moving slowly. 2. The car may produce abnormal noises during a cold start. This is because the oil pump has not yet fully built up oil pressure during a cold start, affecting the lubrication of various components. Once the engine reaches its operating temperature, the abnormal noises will disappear. Once the source of the engine noise is identified, the issue can be effectively resolved. If you notice any signs of abnormal noises in your vehicle, it is advisable to promptly visit a 4S dealership for inspection and repair.