On brakes.. cleaning the master Cylinder...? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-14-2007, 11:35 AM   #1
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Default On brakes.. cleaning the master Cylinder...?

So vehicle is on the shop.. bought new performance rotos.. and it seams that the caliper is not pulling the fluid. Than,, the breaks on the back don't break...

Master Cylinder bad? needs cleaning, or is it cheaper to replace it.
Brake hose, replacements
rear break cylinders are leaking.

suggestions.. so I save money.

Thanks.
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Old 11-14-2007, 12:22 PM   #2
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Please explain what the car is doing a bit differently.
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Old 11-14-2007, 01:36 PM   #3
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Well the breaks don't disengage.. so is driving on breaks.. no all the way.. but the front pads are touching the rotors.. and there new.. and slotted..

The rear breaks wern't breaking correctly and it was warping the front ones.. ..
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Old 11-14-2007, 03:31 PM   #4
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The reason your back brakes are not working is likely due to the cylinders being bad. Replacing those should help that problem. Then bleed the entire system, putting in all new fluid (keep an eye on the level in the master cylinder) and see if that flushes out any crud that may be blocking proper flow. Other than that, your flex lines going to the calipers may be bad internally, or the calipers themselves. Also be certain that the slide pins are lubed properly.
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Old 11-15-2007, 01:30 AM   #5
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Open the bleeder on the calipers and se if the pistons will retract. If they do then the caliper good. That would mean that there may be a bad hose.
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