Join Date: Jul 2012
Location: Bolton Nr. Manchester
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Quoted: 5 Post(s)
You need to spin the wheel to see if the rotors are warped & pushing the pistons back in the callipers.
Also check to make sure the breather in the Master cylinder is'nt blocked. If its blocked, it can create a vacuum in the hydraulic system, pulling the pistons back in the callipers.
Unlikely I know, but i've seen it happen. Not on our bikes with remote reservoir. But on M/C's with integrated reservoir.