Tracer Dye Leak Detection: Notes

NOTE:

Mazda vehicles are produced with R-134a Leak Tracer Dye incorporated into the A/C system. The location of leaks can be pinpointed by the bright yellow-green glow of the tracer dye. Since more than one leak can exist, always inspect each component.

Fig 1: Checking For Leaks Using A 120-Watt UV Spot Lamp

Courtesy of MAZDA MOTORS CORP.

Scan all components, fittings and lines of the A/C system.
After the leak is repaired, remove any traces of leak dye with a general purpose oil solvent.
Verify the repair by operating the system for a short time and inspecting with the UV spot lamp.

Fig 2: Verifying Repair With UV Spot Lamp
Courtesy of MAZDA MOTORS CORP.