What method does Technician A recommend for finding leaks?

Using soapy water and an air nozzle is a widely accepted method for detecting leaks in various applications, particularly in the automotive and collision repair fields. When soapy water is applied to a surface, it forms bubbles in the presence of escaping air or gas. This visual indication clearly shows where leaks might be occurring. The air nozzle adds a controlled airflow to enhance the detection process, as it helps to create a more substantial flow of air that can escape through any openings, increasing the chances of finding leaks.

This method is effective because it is both simple and safe, requiring minimal equipment while providing immediate visual feedback. Its effectiveness in showing leaks makes it an invaluable tool for technicians. Other methods, such as using a heat gun or a flashlight, do not provide the same level of direct visual identification for leaks. A vacuum pump may be useful for specific applications, but it does not provide visual confirmation of leaks in the same straightforward manner as soapy water does.