In general (very loosely) a misfire can be a bad plug, wire or coil.
PAG 46
It could be several things. that coil pack could be going bad, although that is unlikely. It could be a plugged injector, or it could be a bad piston ring, or valves ( In other words engine issues)
Motorweek - 1987 Ford Escape Hybrid 26-46 was released on: USA: 20 July 2007
it is located on the left front of engine in front of motor mount regradless of what any book may tell you
Roadfly TV - 2005 2010 Ford Taurus SEL 5-46 was released on: USA: 4 August 2010
1 cause/guess may be that the plugs were too long and the piston pushed them out.if that was the case your would be able to see damage to the plugs,not to mention damage to the pistons . Please look at consumer reports. There is a lot of information about 5.4L Ford engines blowing spark plugs. Speculation is a design flaw, too few threads in the head to properly secure the plugs. Appears to be too common a problem.
Gerald Ford served as a Lieutenant Commander in the US Navy during WWII (1942-46)
( # 46 ) is a 15 amp fuse for the cigarette lighter on a 2001 Ford Focus
I found a pdf document that has a picture of the location of the EGR valve for you. [http://www.allenengine.com/46-54-truck-install.pdf www.allenengine.com] Good Luck and Remember.Change Your Mind, Not Your Oil.Use the First In Synthetic Motor Oil's.See My Bio For more information.
PAG 46
The part is $46 from Ford dealer plus cost of labor unless you do it yourself.
Passenger side, front of engine.