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Originally Posted by JMan300sd
My brakes are real unresponsive and it really takes some force to brake effectively. The pedal pretty much goes all straight down with very little resistance and a little squelching noise from the arm of the pedal itself...
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OK, I'm confused.
1. Does the pedal go all the way to the floor?
It should not go more than about half way with reasonable force. Too much travel could be from air in one or more brake lines or a master cylinder problem.
2. Is the pedal hard or easy to press when the engine is running?
It should only require firm pressure to stop, not really a hard stand-on-the-pedal action. A hard pedal with otherwise good braking action could be from a loss of vacuum, or a leaking booster.
3. Is the pedal hard or easy to press when the engine is not running?
[It should start out firm, and get more difficult after 2-3 presses. If it is hard to press immediately after shutoff, it could be a bad vacuum line check valve.
No shutoff is a symptom of no vacuum to the fuel shutoff diaphragm, from a leaking diaphragm, a leaking hose/fitting, or a vacuum pump producing low/no vacuum.
These may, or may not be related...