What Causes Engine Abnormal Noise When Engine Oil is Burned Out?

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There are many reasons for abnormal engine noise when the engine oil is burned out, including excessively high oil viscosity, improper timing belt tension, incomplete gasoline combustion, exhaust system failure, and cooling system issues. If abnormal engine noise occurs, timely inspection and measures should be taken. Below is a detailed introduction to the causes of abnormal engine noise: 1. Unsuitable Engine Oil: Excessively high oil viscosity can lead to insufficient engine lubrication, causing friction. It is recommended that car owners choose the appropriate engine oil for their vehicles during maintenance to avoid this situation. 2. Timing Belt Abnormal Noise: Insufficient timing belt tension can cause the belt to stretch excessively under prolonged heavy load, resulting in abnormal noise. It is necessary to visit a repair shop to adjust the timing belt tension or replace it if the issue is severe. 3. Incomplete Gasoline Combustion: When poor-quality fuel is added to the car, the engine may not function properly. In such cases, it is necessary to refuel with high-quality gasoline.