Lower Rad hose leaking after replacing radiator

[ktmall07]

Just replaced the radiator with a CSF 2671 all metal radiator, and now I've found it's leaking from the lower rad hose on startup, but the leak stops after the truck warms up. Seems like there's incorrect pressure at the hose fitting until the truck heats up. I've checked the hose itself, and tightened it as much as I can, but the leak continues only for the first few minutes after the truck starts cold.  

 

Any ideas?

[Strokermjcomanche]

Did you replace the hose as well when you changed the radiator? The old hose might not Be able to seat correctly. You might be able to double clamp it if there’s room.

[howeitsdone]

Had that issue at the water pump. Old hose and wasn't quite seated correctly.