Interesting comment from an online board
"Any Ford Truck with a 5.4L Engine
The 5.4L 3-valve engines used in Ford Trucks from 2004 to 2010 develop camshaft phaser issues, especially when engines exceed the 100,000 mile mark. The first sign of an impending failure is a slight tick at idle, as the problem worsens owners complain of a noticeable loss of power. Engines running rich will clog catalytic converters and trigger check engine light illuminations; repairs are expensive. Even worse many repairs merely mask the problem for short periods of time only to have the issue return necessitating an engine overhaul or replacement. Thinking about buying a Ford pickup? Pop the hood, check the engine specifications, and run away from 5.4L equipped models."
The 5.4L 3-valve engines used in Ford Trucks from 2004 to 2010 develop camshaft phaser issues, especially when engines exceed the 100,000 mile mark. The first sign of an impending failure is a slight tick at idle, as the problem worsens owners complain of a noticeable loss of power. Engines running rich will clog catalytic converters and trigger check engine light illuminations; repairs are expensive. Even worse many repairs merely mask the problem for short periods of time only to have the issue return necessitating an engine overhaul or replacement. Thinking about buying a Ford pickup? Pop the hood, check the engine specifications, and run away from 5.4L equipped models."
