i got a ford f150 supercrew 2001 with 5.4 v8. I changed the plugs yesterday and noticed that 2 of the plugs on one side has oil all over them..I know in my honda i have seals on the valve cover that can go bad and cause this, but does the ford have the same thing or is this blow by??

 

Not on the 5.4L The only heads that have the spark plug tubes running down the middle of the valve covers that leak from time to time are the 4v's