When a damaged cam phaser is left in for too long, it could potentially damage the pistons. In this case, you might need to replace the entire engine, which could be expensive. Using a phaser lockout that locks the cam phaser into a fixed position prevents any movements that could rattle.

What does a cam phaser lockout do?

Our CNC Billet Cam Phaser Lockouts will completely lock the cam timing in the fully advanced position and will eliminate movement and noise associated with failing cam phasers. Cam phaser knock is a common problem in the 5.4 3V Ford Trucks especially in higher mileage or fleet applications.

What happens if a cam phaser goes bad?

When a cam phaser goes bad, the Variable Control Timing (VCT) solenoids would be destroyed, and the engine control unit (ECU) would no longer be able to control the phasers. When this happens, the engine's timing would be affected and could lead to excessive phaser noise.