Your 1989 Jeep wrangler gas tank has two hoses running to the passneger side of it When you make a turn fuel leaks out of the end of one of them Is this line supposed to have a valve on the end of it?

Yes it should have a rubber part that connects it to another hose...go to the dealer to take a look at the systematics(at least mine does if it is the hose that is behind the tail light mount on the passenger side). Your jeep should never leak out gas