Thread: Brake pedal goes to floor

Try pressure or vacuum bleeding the system.

On a Defender it's the only way I can get a pedal, I've never been able to get a pedal with a conventional bleed and I'm pretty well versed in a few different ways as I used to be paid to do it on race cars.

Although this won't be with your pedal to the floor when holding, loose wheel bearings also allow pad knock of or knock back and a low pedal.
Often encountered on dirt roads, corrugations or just big bumps where you'll need a safety tap of the pedal to bring it up before applying brakes.

Sounds like you have an ABS model, if it is THAT bad, another modulator may help.

JC

Thanks rick I'll try the vacuam bleed we haven't tried that
Its a non abs model JC ,96 300 tdi

But if I held my foot hard against the pedal it would very slowly but surely
go to the floor.

I would think that even the new master cylinder is faulty.
If you have a leak anywhere else it will be to the outside , eg a caliper seal, and will be pretty obvious.
Does it use fluid?
I would fit a new master cylinder ,again if I had that problem..
BTW I use a pressure bleeder on my RRC 1992, or a Mity Vac.Both get my pedal rock hard. I think the Disco has a slightly different system but similar.
Regards Philip A

Well, turns our my front wheel bearings were totally knackered. Vacuam bleed the brakes and it now stops when I want it to! Thanks for the advice, much appreciated

That doesn't account for a slowly lowering pedal. if it was then only the master cylinder will do that.
Regards Philip A