It has a small leak in it
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1993 Ford Taurus Question: what is the pipe going into the water pump on my car.It goes into the big inlet
Answer #1aer auto repair llc from AER Auto Repair, November 06, 2011, 16:26Technician
Sounds like your talking about by-pass hose tighten up the hose clamps see if it stops leaking. Note: that motor has timing cover coolant leak issues.
Answer #2mastertech6371 November 06, 2011, 20:45Master
the lower hose has a steel pipe that joins the lower hose to the water pump. the pipe does rot out. it can be replaced. it has one bolt holding it along with the 2 clamps.