When reverse flushing a cooling system, which technician is correct about the removal of components?

When reverse flushing a cooling system, it is typically essential to remove certain components to ensure that the flushing process is effective and thorough. Technician B's claim is likely accurate because the presence of certain components, such as the thermostat and any engine-mounted accessories that could impede water flow, can prevent the flushing fluid from effectively reaching all areas of the cooling system.

By removing these components, the technician allows for better circulation of the flushing agent throughout the system. This ensures that debris and contaminants are effectively flushed out, thus preventing potential clogs or cooling inefficiencies. A clean and unobstructed flow is vital in maintaining the integrity of the cooling system and ultimately the performance of the engine.

In this context, while Technician A might also have relevant points regarding the flushing process, Technician B's approach aligns with common best practices in cooling system maintenance by prioritizing component removal for optimal cleaning.