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Originally Posted by StealthSonic
Anyone have any idea on why my break pedal is hard? The break is working, but not effieciently. I bleed the system yesterday and it soften a little but it's still stiff compare to other cars. I took it to a shop and the mech said I need new master cylinder. Is this something I should look into replacing?
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I don't recall ever hearing of a bad master causing a hard pedal...usually the opposite, you get a soft, dropping pedal...
Sounds more like you have a bad booster...try this: with the motor off, go pump the pedal about a dozen times and then hold it down, then start the motor...the pedal should drop as the booster becomes active...if there's no difference, the booster is shot.
I can't explain why it would feel different after bleeding, unless you got a little air in the system while attempting it, and made the pedal a bit spongy....