What are the causes of axle shaft noise?

[ZoeMarie]

Here are the specific reasons for axle shaft noise: 1. Reason one: The relationship between noise and engine speed. Most common engine noises depend on the engine's speed state. The noise only exists at idle or low speeds. 2. Reason two: The relationship between noise and load. The noise is significantly related to the engine's load. During diagnosis, the method of gradually removing the load cylinder by cylinder can be used for testing, usually employing single-cylinder or dual-cylinder misfire to remove the load of one or two cylinders to identify the relationship between noise and load. 3. Reason three: The relationship between noise and temperature. The noise occurs at low temperatures and diminishes or even disappears as the temperature rises. Excessive clearance between the piston and cylinder wall, or incorrect depth and width of the main bearing oil groove leading to low oil pressure and poor lubrication.