Why is it critical not to operate a bus with a knocking engine?

Operating a bus with a knocking engine is critical to address primarily to prevent engine damage. A knocking sound typically indicates that there is an issue with the engine's internal components, such as problems with the pistons, connecting rods, or bearings. These components are essential for the engine's proper functioning, and continued operation without resolving the underlying issue can lead to catastrophic failures, resulting in significant repairs or even the complete breakdown of the engine.

Prioritizing engine health is vital not only for the immediate safety of the vehicle but also for the longevity and reliability of the bus. Regular maintenance and prompt attention to engine abnormalities can save costs in the long run, enhance performance, and ensure safety for both the operator and passengers. Thus, addressing the knocking sound and any related problems is crucial to maintain operational efficacy and prevent further damage to the vehicle.