Ford F-150 engine rattle on startup due to cam phaser replacement often needed after 100,000 miles on Ford F-150

Some Ford F-150 owners report experiencing engine rattles on startup, particularly after reaching significant mileage, such as 100,000 miles. These rattling noises can be attributed to various factors, including issues with the timing chain, tensioner, and cam phaser. The cam phaser, which controls the timing of the engine valves, may wear out or become damaged over time, necessitating its replacement to resolve the rattling issue. It is crucial for Ford F-150 owners to be aware of these common problems and to address them promptly to prevent further engine damage.