F 150 2WD Pickup V8-5.4L SOHC SC VIN 3 (2003)
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Refrigerant system pressure should be between 413-551 kPa (60-80 psi) at 24°C.
1. Verify that the valves on the special tool are closed.
2. Fill the special tool reservoir with 7 ml (0.25 oz) of fluorescent dye.
3. Install the special tool between the high-pressure and low-pressure service gauge port valves.
4. Start the engine.
CAUTION: Make sure all tools and hoses are dear of the engine cooling fan and drive belt before starting the engine.
5. Open the high-pressure service valve.
6. Open the special tool valves and inject the fluorescent dye into the refrigerant system.
