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Q: what is procedure for bleeding brake booster ? on 2001 Ford F-250 Super Duty

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
hydralic brake booster whines real load and brake pedal is soft,need to replace brake booster.
(1) Answer
check the power steering fluid first. that is what runs the booster.
if the pedal is soft, i would look at the brake system also for leaks or a bad master.

Roy