What are the symptoms of camshaft noise?
1 Answers
The symptom of camshaft noise is the sound emitted between the camshaft bearings and the shaft during engine operation. It is a rhythmic, dull metallic knocking sound. The noise is more noticeable when idling or at slightly higher idle speeds, and can be heard at various camshaft bearing locations. The camshaft is a component in piston engines. Due to its high rotational speed and the need to withstand significant torque, the design imposes stringent requirements on the strength and support of the camshaft. Its material is typically high-quality alloy steel or special alloy steel. The following are the causes of camshaft noise: 1. Excessive clearance between the camshaft and its bushings. 2. Rotation of the camshaft bushings. 3. Bending deformation of the camshaft. 4. Excessive axial clearance of the camshaft. 5. Burning or detachment of the camshaft bushing alloy.