Hello all, I’ve got 2015 6.7 with 80k miles.

I’ve always had this engine knock but never an issue with fuel mileage or the truck's overall performance.

The noise is getting slightly louder, and the research I’ve done shows it to be a CP3 knock.

Some say they have retimed the CP3 to sync with some cylinders at TDC and have fixed the noise, and the engine is much quieter.

I cannot find any videos on how to do this, or if anyone has attempted this procedure to please walk me through this.

From what I understand is I’ll need a steering wheel puller or a harmonic balancer puller.

The idea is to remove the CP3 gear and rotate the motor 30 to 60 degrees to sync the CP3 equipment.

If not in sync, the backlash is the result of the knock that I’m hearing.

I appreciate any help you can provide.