2003 Intreped. 2.7 engine car sat for 6 months and coolant ran all over floor. Tested for leak (pressure test) no leak found added water and drove car for 6 months no leak. Let car sit for last 4 months and all coolant leaked out again. Any thoughts?

 

Where is it leaking from? You should be able to tell where it's coming from. Possibly a pinhole leak in one of the hoses.

 

Pressure tested with 18 lb pressure no leak down added water drove car for 6 no. No lost of water sat car for 4 months all water drained out

 

As I said you should be able to at least see, from the puddle, what area it’s coming from.

 

Appears to be coming from driver side. Wondering if the water pump seal loses is tension after sitting awhile. It did this last year. Came back from vacation water all over place added water drove car all summer no leak. Went on vacation for 5 months now water all leaked out again