Engine missing-Tried all I know, all out of answers!?!

[DontPanic]

Update: After alot of cussing and some thrown tools I finally got that 6th plug out. Needless to say it was in pretty rough shape. I went ahead and regapped all 5 others while I was at it and between those 2 things it seems to have fixed most of the issues. Just running through my 1st fillup since doing this so I'll report back on fuel economy. I went ahead and ran some Seafoam through it so hoping all is well before we take off on a 1500 mile trip to Virginia.... Thanks to all!

 

[ambrosiaB]

having similar problem with kind of a dragging feel replaced plugs but not wires. I'm sure the fuel filter needs to be replaced would the PCV valve cause the dragging feeling?