Checking System For Leaks Using The Fluorescent Leak Detector
WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
- Check A/C system for leaks using the UV lamp and safety goggles (J-42220) in a low sunlight area (area without windows preferable). Illuminate all components, fittings and lines. The dye will appear as a bright green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain opening indicates an evaporator core assembly (tubes, core or expansion valve) leak.
- If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or cloth.
- After the leak is repaired, remove any residual dye using dye cleaner (J-43872) to prevent future misdiagnosis.
- Perform a system performance check and verify the leak repair with an approved electronic refrigerant leak detector.
NOTE:
- Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be checked are clean.
- Clean with a dry cloth or blow off with shop air.
- Do not allow the sensor tip of the detector to contact with any substance. This can also cause false readings and may damage the detector.