Brake pedal dropping to floor

[erik325i]

As said by a couple people already, it's a bad master. I've had an e30 that did the same thing with the clutch master cylinder. I could push the clutch and shift just fine, but if I held the clutch down at a stop light, it would slowly start to release and engage the clutch.

[Lakis]

Back to the brake reservoir.

I don't agree. I think it's in his brake booster.

[Aatos]

Duh, the situation became acute today as the pedal goes straight to floor now and there's no vacuum assist. Time to start wrenching...

[Aatos]

I replaced the master with a new one and bled the brakes. Alles in ordnung now! ;)