How to Check for Car Air Conditioning Leaks?

[DeCharles]

Methods to check for car air conditioning leaks include: 1. Visually inspect the air conditioning system for oil stains, as these indicate leakage points; 2. Fill the system with nitrogen and apply soapy water to various parts—bubbles will form at leakage points; 3. Light a leak detection lamp and hold the air tube of the halogen lamp near the system—if the flame turns purple-blue, it indicates a leak; 4. Utilize the pressure difference between the inside and outside of the system, amplify the difference via a sensor, and display the leak detection results digitally, through sound, or via electronic signals; 5. Add fluorescent dye to the system in a specific ratio, wear specialized glasses, and illuminate the system externally with a detection lamp—leakage points will show yellow-green fluorescence.