What causes the engine to make a whirring sound like wind?

[KaydenMarie]

Engine making a whirring sound like wind can be caused by the following reasons: Engine humming sound at idle: When the car is in normal idle state, the humming sound may be caused by the operation of the electronic fan used for radiator cooling. However, this sound is intermittent. If the humming sound persists, it may indicate a fault with the temperature sensor or temperature regulator. The owner should promptly inspect it to avoid abnormalities during driving that could lead to more serious vehicle malfunctions and cause financial losses. Humming sound during low speed or gear shifting: The humming sound during low speed or gear shifting is generally caused by excessive clearance between the piston and cylinder wall. This phenomenon can occur due to overly tight assembly during installation or abnormal wear. Another possible reason is engine knocking. In the early stages of engine knocking, a humming sound will be emitted, which may be caused by advanced ignition timing or excessive carbon deposits in the cylinder leading to knocking.