What are the symptoms of abnormal noise from the Earth Dreams engine VTC actuator?

[IkerFitz]

Engine VTC actuator abnormal noise is manifested by a variety of possible noises from the engine compartment. Most people identify it as engine compartment noise based on the sound source, typically characterized by a metallic screeching or a whistling-like noise. Solution: Engine abnormal noise indicates that the technical state of a certain mechanism in the engine has changed. This is mainly caused by excessive wear of some parts or improper assembly and adjustment. Some abnormal noises may even warn of potential catastrophic damage to the engine. Therefore, when abnormal noise occurs in the engine, it should be repaired promptly to prevent further damage. Transmission abnormal noise: Symptom description: If there is a "rustling" sound inside the transmission while driving, which disappears when the clutch or accelerator is pressed, and a whistling-like sound occurs during gear shifting.