Oil leak after oil cooler replacement

[iggys6]

Hello I am new to the forum I have a 05 6.0 lariat and I replaced my oil cooler 300 miles ago and then all of a sudden oil began squirting everywhere. I torqued down all the gaskets so I didn't think it was one of those and then put a diagnostic camera in there and ran it and saw that oil was coming out of a small pin size hole? Continued to do some research and found out it is a weep hole but I do not know why its there and why it would be leaking. Please let me know, Here are some pictures. Thanks, Ethan

 

[renegade]

You probably have a bad o'ring on the oil cooler itself. I think that is the only way oil can get to that hole.