After my water pump went bad I went and bought a brand new water pump.about 3 times a week im getting a quarter size drip in my driveway over night.it seems to be coming from the lower hose.I bought a new hose pushed it over the lip on the new water pump put the clamp on tighted it up a week later i have a leak again over night.my truck also has a brand new
radiator.the leak seems to be coming out from the top of the lower hose.why do you think it keeps leaking?

 

Check the Thermostat housing. The gasket maybe leaking. If that no leaking, pressure check the system and check the freeze plugs, timing cover and the by-pass hose.

 

Check that hose clamp again. I had to tighten mine four times in that same location. All the others were good with the second go-round, but that one wanted to be a PITA.

 

+1 on the hose clamp. If thats not it I'd check the bypass hose that little pita seems to love giving grief.

 

Hopefully it's just the hose, but I'm willing to bet the timing cover gasket got torn when the WP was removed. Try tightening all the timing cover and WP bolts again.