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Front Wheel Pulsing

There is another cause but it’s unlikely in most cases of pulsing. When new or freshly machined rotors are installed, the brakes need to be properly bedded in to work as they should. This involves repeated sequences of high speeds and then very hard braking which gets the rotors and pads very hot which transfers pad material to the rotors.

If that coating on the rotors is somehow worn away or otherwise removed in areas, it creates areas of different coefficients of friction, and because less slippery and more slippery areas are passing thru the pads, pulsing can occur. In that case, bedding the brakes again will cure the problem. Doing this,’of course, is much less risky in a 4 wheeled vehicle.
 
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I had a mystery pulse once in tune with the front wheel rotation under brakes.

I scrubbed the rotors with red scotch brite, cleaned them with brake cleaner, re-torqued the calipers with the brake lever on, no change.

Then I pushed sideways on the rotor buttons. The rotor buttons had the little springs, not full floaters. Some of the rotor buttons were "stuck" and pushing on them loosened them up for free sideways motion. Problem solved.
 
What part of your body did you use to detect the pulsing?
 
Not really guessing. If you don’t feel the pulsing through the brake lever, it has to be caused by different regions of differing coefficients of friction on the rotor as they pass through the pads. And there are two main causes for this. 1. Contamination of the rotor or 2. Uneven deposition of pad material.

Cures: For 1., clean the rotors. For 2., bed the brakes again.

It’s knowledge and experience speaking. Not guessing.
 
And if the OP would simply clean his rotors thoroughly, we’d have a much better idea of the cause of the problem. It’s easy and quick to do.
 
Also, the oils on your mechanics hands and fingers could be the cause of any contamination of your new rotors.
 
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