Why Does the Car Make a Clicking Noise When Accelerating?
2 Answers
Here are the reasons why a car may produce a clicking noise when accelerating: 1. Reason One: Generally, during a cold start, the engine noise is slightly louder than when the engine is warm. As long as the sound is uniform and soft, not harsh, it usually isn't a problem. This is because, when the engine is cold, the gap between the cylinder wall and the piston hasn't reached its optimal size. Typically, when the engine block temperature reaches around 95 degrees, the sound will return to normal. 2. Reason Two: Poor-quality engine oil, not changing the oil for a long time, or a lack of engine oil can easily increase friction between the valves and guides, as well as in areas like the hydraulic lifters, making various sounds within the engine louder. 3. Reason Three: If you're still concerned after the above checks, it's recommended to visit the nearest 4S shop or auto repair shop for an inspection to confirm the cause of the fault.
I also encountered this situation. There was this rattling sound when accelerating, which was quite worrying. That time my old car started making noise while going uphill, so I took it to a mechanic. Turns out the alternator belt was loose and covered in oil. He explained that belts can loosen or run dry over time, and the tension changes during acceleration cause the noise. If left untreated, the belt could slip or even break, leaving the car completely stranded—pretty dangerous. So I suggest car owners not take it lightly. Check under the hood to locate the sound source or inspect the belt condition as soon as possible. Another possibility could be an unbalanced fan blade, which isn’t expensive to fix. Developing regular maintenance habits can prevent minor issues from becoming major ones—like replacing the belt annually or cleaning components. It’s pretty simple.
