Pedal is still spongy after bleeding brakes and replacing master cylinder

Asked by Mar 25, 2017 at 02:18 PM about the 1994 Honda Accord EX

Question type: Maintenance & Repair

My brakes are spongy and not building up pressure at all. Brakes underwent
a heavy duty bench bleed after a standard bleed wasn't working, master
cylinder was replaced, new brake pads, control rotor and caliper were recently
installed, and still the brakes are not building pressure, any idea on what is
wrong?

1 Answer

85,615

Did you say you bench bled the master cylinder before putting it on? And did any air get past the master cylinder before replacing it? If so then air has gotten into the ABS control unit and you would not be able to bleed that. It would have to go to a shop that has a scanner to run a program to bleed out the ABS Control Unit.

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