If I'm seeing this right, you're using the high-side port, but the two hose fittings should be different. You should not be able to connect the charging hose to the high side.
Normally the compressor builds pressure in the condensor in front of the radiator which transfers to the receiver / drier, (which is what you're connected to), and to the expansion valve. From there it becomes the low side to the evaporator and the hose to the compressor. Fords typically puts the low side port right on the compressor. That's where you should be charging from, and only with a vapor, never a liquid. Keep the can upright so vapor boils off. Liquid refrigerant will lock up the compressor.
If it takes a real long time for the refrigerant to go in, or if it won't go in, place the can in a pot of hot water. That will really speed things up.
Wednesday, April 28th, 2010 AT 12:14 PM