Agreed, take it back to the dealer. Sound's to me that they actually either didn't tighten it down enough or there is a blockage. Do you have any pics? Cuz, I seem to remeber there being clips on some of the hose connections, not to prevent tightening but to keep the clamp on the hose during the factory's installation. Either way, the hoses shouldn't pop off a new Jeep in anyway! I'm definite that they will cover it at no cost! Good luck and welcome to the forum.