Thread: 98 lumina brake problems, NEED HELP!!
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Old 07-13-2011, 05:55 AM   #4
procaddytech
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Re: 98 lumina brake problems, NEED HELP!!
It sounds like the master cylinder has an internal leak. especially if there are no external leaks, and you are sure you have no air in the system after bleeding. A new master cylinder should come with new proportioniong valves also.
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