What are the reasons for the loud engine noise in the Excelle?
2 Answers
The reasons for the loud engine noise in the Excelle are as follows: 1. Break-in period: After a new car has undergone a certain period of break-in, the gaps between various engine components will increase, so the noise will be louder than when the car was new, which is a normal phenomenon. 2. Degradation of engine oil effectiveness: After a period of use, the effectiveness of the engine oil will gradually degrade, and the increase in noise at this time is also normal. 3. Inappropriate engine oil: If the engine oil is not suitable, it may also cause the engine noise to be loud. 4. Engine malfunction: When the engine malfunctions, the noise is abnormal, and the car should be sent to a relevant maintenance and inspection center for repair in a timely manner.
I had the same issue with my Excelle, the noise was as loud as a tractor. The most common cause is engine oil problems—when the oil change interval is too long, the viscosity drops, leading to insufficient lubrication and dry grinding in the engine. Alternatively, using oil with the wrong viscosity can also cause this. Engine mount deterioration is even worse; if that rubber block cracks, the engine vibrations transfer straight into the cabin. An air leak in the intake system can produce a hissing sound, so focus on checking the air filter box and intake pipe clamps. Worn spark plugs causing poor combustion can result in popping sounds from the exhaust. I recommend first changing to standard oil and revving the engine while stationary to listen for noises. If there’s a metallic knocking sound from the engine bay, it could indicate piston or connecting rod bearing issues—this requires immediate repair. Last time I replaced the engine mounts, and the world instantly became quiet.
