Please help me with my coolant and water leak. on 1997 Ford Expedition

Theres a rusty pipe by my manifold that immediately leaks the water out as soon as you pour it in. What is this and how do you repair it?

Asked by for the 1997 Ford Expedition
You mean the pipe under the intake manifold?
Yes the intake manifold. Dont know if its suppose to be plugged or it hooks to something but its pouring the water out
If it's the pipe that runs 'under' the intake from the water pump, the manifold will need to be removed to replace that pipe. It actually feeds the heater core at the rear of the engine!
It is under intake manifold but cant tell if it hooks to water pump or not but its real rusty
Read my last reply.
Thank u so much. Do u know what that part is called that I need to buy?