I found coolant leaking out of a drain on the firewall just below the two lines that connect to the heater core! I take it my heater core is shot?
for kicks and giggles, take both hoses off and take a garden hose to the outlet side and give a lil blast. over time my gummed up and i had an issue with it. one blast and i was good as new! but thats just my 2 cents on what i think was a lucky break.