Brakes to the floor
Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 6,218
Likes: 695
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Brakes to the floor
Out for a short errand this afternoon in my 85 and the first stop was an adventure. Brakes went to floor with no warning and just slight braking even after pumping. Really lucky I wasn't flying at the time.
I assume this is a master cylinder problem?
I assume this is a master cylinder problem?
Melting Slicks
Joined: May 2014
Posts: 2,877
Likes: 589
From: New Port Richey FL
I know you're a little Hyper right now but more information please, first is there enough fluid in the master, is there any No visible leaks. If so yes I would look towards the master but the whole system needs a look though
Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 6,218
Likes: 695
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
brakes work when seals in master cylinder push fluid against caliper pistons to move pads. Pedal should hit solid when brake pads do. If it moves to floor with little to no braking action one of two things happened. First there is a hole (leak) somewhere. The fluid squirted out rather than moving the pistons. Second is the seals in the master cylinder are worn. Instead of pushing the fluid out, it just flowed over the seal and did not move towards the pistons. If your fluid is not low (no leaks) then most likely the seals are bad. Time for a Master Cylinder rebuild or replacement.
Air in the lines can cause the soft pedal / no brake but air usually only gets in when a hold lets fluid out.
Air in the lines can cause the soft pedal / no brake but air usually only gets in when a hold lets fluid out.
Last edited by dburgjohn; Aug 7, 2023 at 03:54 PM. Reason: added note about air
