How to Repair Loud Valve Noise?
1 Answers
The repair methods for loud valve noise are: 1. Remove the cylinder head, grind the valves, check the spring tension of the valve springs, and readjust the valve clearance; 2. Readjust the valve clearance properly. If the locking nut on the adjustment screw is loose, it should be securely tightened. Replace severely worn components; 3. Replace any broken valve springs; 4. Reinstall the valve seat so that its upper surface is flush with the body plane. Grind down any protruding parts to make them level. The causes of loud valve noise are: 1. Damage or poor sealing of the hydraulic tappet itself; 2. Improper use of engine lubricating oil; 3. Noise during cold starts that disappears as the temperature rises.