check your spark plugs look for a clean one if your very lucky thats a clue for wich head gasket is leaking if no clues chang them bolth thats the best thing to do any way could you have to much oil and its wiped or your shure its milky and if your really lucky nothing is cracked when there off magna flux them cheap insurance dont do it twice whats wrong with fords i drive one every day ---but not in my boat are you crazy--nasty good luck