Is It Normal for a Car to Make Abnormal Noises When Accelerating?
1 Answers
It is not normal for a car to make abnormal noises when accelerating. Possible causes of abnormal noises when stepping on the accelerator include cold engine start-up acceleration, deteriorated engine oil, or issues with the car's half-shaft quality. Below are the relevant details: Cold Engine Start-Up Acceleration: During a cold start, the engine noise is louder than when the engine is warm. This sound is uniform, smooth, and not harsh, which is normal. In such cases, you can wait for the engine temperature to rise before accelerating. Deteriorated Engine Oil: Check the engine oil. If the oil has not been changed for a long time or has deteriorated, it can increase friction between the cylinder valves and guides, as well as in the hydraulic lifters, leading to abnormal noises when accelerating. In such cases, the engine oil should be replaced promptly. Issues with Car Half-Shaft Quality: If the car makes abnormal noises immediately upon accelerating, the issue may be with the half-shaft. Due to long-term torsional fatigue and impact forces, the half-shaft can become bent, twisted, or fractured, or the spline teeth may wear or become misaligned. This can cause the car to shake rhythmically at certain speed ranges when accelerating, accompanied by abnormal noises. The shaking may disappear or lessen when the accelerator is released. In such cases, it is advisable to visit a repair shop or 4S store for professional inspection and repair.
