Coolant leak underneath the back of the engine
My 03 expedition 5.4L will not hold coolant, its leaking
from underneath the back of the engine. I use my
garden hose to fill the reservoir with water to see
exactly where it was coming from, and it just leak out
the back underneath. Not sure exactly where. Any
suggestions as to were the leak might be
Check the heater hoses, they connect to the firewall connecting to the heater core inside the dash. Also might be a freeze plug came loose.
Nice one Tom I was going to suggest the same. TK, Make sure the engine is thoroughly degreased in the back, as well as the firewall. This will help you find leaks more easily. good luck.
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