TwinTurbo.NET: Nissan 300ZX forum - Symptom of bad brake master cylinder???
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Subject Symptom of bad brake master cylinder???
     
Posted by RevHard on April 25, 2011 at 12:19 PM
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Message My brake trouble continued...

The pedal was firm even when the caliber seal was leaking brake fluid. After I rebuilt it with new seal and dust boot, the pedal became soft and goes to the floor when the car is on.

I bled and bled but could not fix pedal feel. There are a few tiny bubbles bleeding out of the brake everytime. But there is no brake fluid weeping past the piston seal. So I don't think I nicked the seal/piston while rebuilding. And the nipples are up. So what the hell? I'm ready to push this car over the cliff to see if it will fix the problem.

So can BMC go bad just like that? I see no visible leaks under BMC. But again it's hard to see in the cramped engine bay.

Any suggestions/thoughts? Thanks,

     
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