Question about Cars & Trucks
Id replace the master cylinder and make sure to bleed all wheel not just 3
Posted on Jul 16, 2013
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Posted on Jan 02, 2017
Did you have this problem before you replaced the M/C? Inspect your brake system for leaks, especially the rubber hoses. Make sure all fittings are tight. Sometimes the caliper's seal around the piston will allow air to **** in, but won't leak fluid. Many cars from the 80's onward had pistons made out of plastic which causes a sticking and leaking problem. Many times rebuilt, loaded with pads, calipers cost just a little more than what a reseal kit costs. They have to be cutting corners somewhere.
If your vehicle has ABS, sometimes you have to hook a scanner up to bleed the brakes correctly. If you don't have ABS, you probably have a proportioning valve and these can cause trouble, especially on a high mileage vehicle.
Posted on Jun 11, 2008
Bleed the master cylinder and then rebleed the brakes. If you are still getting a spongy pedal after this then your master cylinder is bad.
Please rate this and let me know if this solved your problem.
Posted on Feb 11, 2009
SOURCE: Bleeding front brakes and brake
Must bleed all four brakes to determine if there is air in the lines.
If after bleeding several times, the brake pedal still goes to the floor board, the master cylinder may be determined to be bad.
Posted on Aug 12, 2010
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