Thermostrat housing and/or intake maniford leaking antifreeze.What is problem. on 2004 Ford Explorer Sport Trac

Corison behind thermostrat housing on intake. Replaced water pump and thermostrat and it still leaks.

You need to have a shop pressure test the cooling system to determine where the coolant is coming from, They install the pump where the radiator cap should go and pump air into the system and it will make the coolant come out where its leaking
How much thus this pumping or air cost?