can anyone yell me the firing order of a 98 mustang? and where my fuel filter is?? i changed the spark plugs, and gapped them to 54 as instructed. now my car is running like total pooh. i put new spark plug wires on today, still running ickey, but a little better. could sure use some help. thnx--also could use help on a 67 camaro-email me and i'll tell u more....