What causes the loud engine noise in Xiali N5?

[LaJosie]

There are several reasons for the loud engine noise in Xiali N5: Excessive carbon buildup: Excessive carbon buildup in the engine is a significant cause, primarily due to the use of inappropriate fuel. Solution: It is recommended to add a certain amount of fuel cleaner during refueling. After cleaning, it's best to drive at high speed for a while, which helps increase exhaust flow and allows stronger airflow to carry out larger carbon particles. Oxygen sensor damage: The oxygen sensor mainly monitors the air-fuel ratio in the engine. Once damaged, it will cause an imbalance in the air-fuel ratio, leading to a sudden increase in fuel consumption. Solution: Check the oxygen sensor as it is an internal control unit of the car, and the oxygen sensor should be replaced.

[MacGideon]

Driving a Xiali N5 with a loud engine noise is really annoying, and the most common source is the belt. After years of use, the belt can become loose or worn, causing constant squeaking and increasing noise. Insufficient engine oil is also critical, as poor lubrication leads to louder friction between components. Carbon buildup shouldn’t be ignored either—long-term low-speed driving causes carbon deposits, altering the compression ratio and making the engine rumble. When the engine is warm, listen for the source of the noise: if it gets louder with acceleration, it might be an oil issue; if it’s a constant noise, consider the belt. My advice is to regularly check belt tension, change the oil on time, and reduce carbon buildup. Ignoring these issues can lead to higher fuel consumption, poor performance, and even severe bearing damage, doubling repair costs. Head to a professional auto repair shop for a thorough inspection to avoid bigger troubles.

[VonJayce]

I've been using my Xiali N5 for quite some time. Last year, the engine suddenly became noisier with an annoying humming sound. I checked the engine oil myself—it was still sufficient but black and dirty. After changing to new oil, it became a bit quieter. Worn and cracked belts can also cause noise; tightening or replacing them should help. Too much carbon buildup without cleaning makes the engine run unevenly and increases noise. During regular maintenance, I pay attention to cleaning the fuel injectors and using high-quality engine oil. I suggest car owners check simple components first when hearing loud noises and not delay repairs to prevent minor issues from becoming major ones. Otherwise, engine wear could damage core components, making driving unsafe.

[DelKennedy]

As a beginner driving a used Xiali N5, I noticed the engine noise became louder, especially with a roaring sound during acceleration. I asked a car-savvy friend about it. He suggested first checking if the engine oil is low or dirty and replacing it if necessary, as dirty oil can significantly reduce noise. Loose belts can cause a screeching sound and may need adjustment or replacement. Carbon buildup can be addressed with cleaning additives. Ignoring these issues can lead to louder noise, higher fuel consumption, and even breakdowns. Regular maintenance and inspections can help minimize these problems.