hello, i have an 97 wrangler sport with the 4.0l and 5 speed, i have been having problems with it leaking antifreeze. at first it was coming from around the lower hose at the radiator and the water pump,i have replaced them and the stat as well, the radiator is about a year old and does not appear to be coming from there. i did a pressure test on it and could not find the leak,i pumped it up and it stayed at the 18 psi for half an hour. what i did find was that when running the engine with the tester on it the pressure slowly(needle does not jump) went up over 30 psi, i am guessing at that pressure it would come out anywhere..it does not run hot stays around the 210 mark as usual, it runs great, does not miss or blow any antifreeze out the exhaust, i am thinking head gasket.although it does not have water in the oil or oil in the water. any ideas?