Brake pedal pulsation after new rotors how I diagnose it

When a customer comes back with brake pedal pulsation after new pads and rotors, I try not to say warped rotors right away. Sometimes it is the rotor. A lot of times the problem started during installation, and replacing parts again just hides the real cause for a little while. The first thing I check is the hub face. Rust scale, old rotor material, or one small burr can put the new rotor on croo…