E 450 V8-6.0L DSL Turbo VIN P (2004)
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3. Install the deluxe injector loop kit between the high-pressure and low-pressure service gauge port valves.
4. CAUTION: Make sure all tools and hoses are clear of the engine cooling fan and drive belt before starting the engine.
Start the engine.
5. Open the high-pressure service valve.
6. Open the deluxe injector loop kit valves and inject the fluorescent dye into the refrigerant system.
7. Close the high-pressure service valve to allow the pressure inside the deluxe injector loop kit to equalize with the suction side of the refrigerant
system.
8. NOTE: Close the valves on the deluxe injector loop kit while the A/C compressor is operating.