What should the spark plugs be torqued too? I seem to remember 7ft.lbs. but that seems to be very little torque... I also remember someone on here saying that there are some spark plugs with longer threads that help to alleviate this problem? Last, my warranty is long gone, if I take the car to Ford and have them replace the plugs and then one blows out later would they be responsible and make any repairs that may be necessary free of charge? If that is the case I think I may just pay them to replace them instead of doing it myself...