Reply to "Losing brake pressure...any ideas?"

rapierMember

Sounds exactly like the problem Cyboman had with his clutch (see "sinking clutch pedal" from June 7th).
If the pedal just falls to the floor but you aren't losing fluid then it either isn't moving the piston in master cylinder or the piston isn't pushing the fluid.
So it could be that the piston in the brake master is not returning sometimes - so the pedal has nothing to push.
It could be grit in the master so that fluid leaks past the piston cup.

Either way I think you need to get the brake master apart to find out.

6/23/056:00 AM

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