What Causes the Zizi Noise During Car Acceleration?
2 Answers
There are several reasons for the zizi noise during uphill acceleration: Engine Abnormal Noise: This indicates a change in the technical state of a certain engine mechanism. It is mainly caused by excessive wear of some parts or improper assembly and adjustment. Some abnormal noises can even predict potential catastrophic engine damage. Therefore, when abnormal engine noise occurs, it should be repaired promptly to prevent further damage. Transmission Abnormal Noise: If there is a "rustling" sound inside the transmission while driving, which disappears when the clutch or accelerator is pressed, or if there is a whistling-like sound during gear shifting, it indicates transmission issues. If the transmission noise is significant, it is recommended to send the vehicle to a professional repair shop to identify and replace the faulty components.
I noticed a buzzing noise when accelerating the car, which is most likely an issue with the belt system. It might be similar to what happened to my car initially—either the drive belt is loose or severely worn, especially during cold starts or acceleration, causing friction and squeaking. Alternatively, it could be insufficient belt tension or aging wheel bearing noise. I tried a simple check myself: applying soapy water to the inner side of the belt. If the noise reduces during acceleration, it confirms the belt is the culprit. If not, a damaged driveshaft or exhaust pipe leakage could also cause buzzing, like my friend’s car, which had aging exhaust pipe joint seals. Regularly check the belt’s condition during daily driving. If there are many cracks or the noise worsens, don’t delay—replace the part to avoid minor issues turning into major repairs. Safety first—never ignore unusual sounds.
