yea sounds like u guys found out the problem narrowing it dont to the cam phasers, in all the 5.4 3v its what mainly goes. the cam phasers advance and retard the engine. so when the cam phasers go bad u may notice the ur truck is running more rough. its some design that ford did because if u look the 5.4 3v dont have an egr valve. also if ur truck is running smooth at a stop light and for a second it seems to run rough thats normal, its called a lean roll, thats apart of the cam phasers advancing and retarding the engine, and if anyone needs their spark plugs changed that live in florida. and near west plam beach ill do it.
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