Hello all new to this site ,but was reading some of the other posts thought i'd pick your brains. Ok so I've got a 06 expedition that stumbles at highway accelerations,and smells like fuel? Ive changed the plugs, 3 of the 8 coils, fuel filter, and trying to find the pcv valve. Any ideas as to where the pvc valve is located I ordered one online and cant find anything under the hood that resembles it ? Also changing the rest of the coil boots.