ok i have a 04 wj limited with the 4.7 in it. In the last few weeks its been sounding like water under the dash, i have been busy with work so have not checked into it, my wife called me the other day, said check engine light came on, and said #8 cylinder missfire. Well, i just got home, checked coolant, its a lil low, gonna top it off, but i had topped it off about 2 months ago on our road trip. Oil looks fine, no antifreeze in it. I am gonna take to dealer monday as we have 800 miles left on warrenty. It will prob be void since i did a lift on the jeep with bigger tires though. Anyone got any ideas or common problems? I know these are known for head gaskets, anything else?