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Old 03-15-2017, 08:12 PM   #10
Lew
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Join Date: Nov 2016
Location: SE Georgia
Posts: 389
Garage
The most obvious cause for a hard pedal is simply not enough vacuum. Any brake booster requires a minimum of 18” vacuum to operate efficiently. Anything less than that will contribute to the pedal being harder to push. Check the vacuum hose to the booster.....Could be leaking!
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