There's still a problem with the pressure as the "pressurizing tank" light on the a/c recovery/recharge unit continues flashing. The refrigerant is just not getting drawn into the car's a/c system. I didn't perform another evacuate and vacuum cycle after I got the car's compressor to turn on. I don't know if that's where my problem is.

So far only 8 ounces of refrigerant have gone in. I don't want to run the car's compressor too long without a sufficient charge.

Does anyone have any other recommendations?