March 23rd, 2014, 01:45 PM
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#10
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Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011
Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114
Posts: A lot.
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Quote:
Originally Posted by dcj13
Bad master cylinder is a possibility. My experience (albeit limited, as a shadetree mechanic) is that a bad master cylinder either doesn't pump up pressure at all, or pressure can be pumped up to seemingly normal with a few strokes of the lever (or pedal, as the case may be) before going limp again after sitting for a while. I've never seen one "partially fail" as described. But I'm sure it's possible.
Another thing to consider is a bad hose from the MC to the caliper. Could it be soft and expanding slightly in diameter as one squeezes the brake?
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I had it happen a couple times with re-manned in a car. He said he's using SS lines.
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