Quote:
Originally Posted by J-440
Am using braided steel line with no tape whatsoever. The outside pad slides out no problem, but the inside pad I have to pry out. The pistons are only about 1/8" sticking out on the defective side, the other side the pistons are flush with the caliper.
What causes the pistons to retract anyway? When you release the pedal, is a suction created to draw the pistons away from the pads?
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Good question about the suction -- there might be a teeny amount - but it would be minuscule. The pad is generally just resting on the rotor and the flex of the rotor will push the pad back (we're talking really small movements here). New cars with fancy ABS brakes will sometimes have a feature where if you turn on your wipers they figure your brakes (rotors) are wet and they'll apply a small amount of pressure just to dry them off.
Sounds to me like you have a bad caliper.
Since it's only the one caliper that's acting up... otherwise I'd be asking you about your complete system - like your residual valve etc. And some Masters have residual valves built in.. but your other caliper is acting normal so we're just worried about the one.