Quote:
Originally Posted by Walt Fricke
If the MC piston(s) don't retract fully when your foot comes off the brake, the pressure in the brake lines won't bleed off, at least not fully.
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^This. If the pressure cannot be released due to the pedal not retracting all the way, then the brake pads will drag, which will cause the fluid to warm up and expand, which puts more pressure on the brakes, which causes the fluid to get hotter and expand more.. You see where this is going.