Is the Abnormal Noise in Harley X48 Engine Normal?

[SanEli]

Harley X48 engine abnormal noise is not normal. Motorcycle engine abnormal noise: Small chain, cam rocker arm, clutch and other mechanical failures. Principle of abnormal noise: When the small chain is too long, the part of the chain output will produce arc-shaped jumping as the engine operates. If it is too long, the angle of the arc will directly hit the cylinder liner, producing a certain dragging sound. The valve clearance is too large between the rocker arm and the valve, and the sound is produced by the valve intermittently touching the rocker arm. The clutch abnormal noise can occur both in non-wear and wear conditions. Motorcycle engine: A motorcycle engine is a mechanical device that converts the heat energy generated by igniting the fuel-air mixture in the cylinder into mechanical energy, and transmits the power through the crankshaft to the rear wheel of the motorcycle via the transmission mechanism, thereby providing the driving force for the vehicle.