I replaced the master cylinder with a new one bench bled it before installing and bled all four wheels lr rf rr lf sequence.
Pedal goes to floor after bleeding.
Brake pedal goes to the floor after bleeding the brakes.
This happens because you are not getting sufficient power boost required to stop the car.
The leak may coming from a brake line or one of the brake calipers.
The pedal goes all the way to the floor to stop the car completely.
If the pedal is going to the floor the problem is elsewhere.
Technically there are two main causes that would make the brake pedal sink all the way to the floor.
Bled all lines front rear repeatedly but the pedal still goes to the floor.
Changed all steel line at rear plus calipers and brake hoses.
Did you go through the whole bleeding process from bench bleeding the master cylinder to bleeding the wheels furthest from the mc to the closest.
One of the reasons is the brake system loses pressure from an external brake fluid leak.
Reasons your brake pedal goes to the floor.
If the brake shoes are worn the air gap between the shoe and the drum will be enlarged making the brake pedal travel downward beyond its normal throw.
Had a leak on steel line over rear axle.
After replacing master cylinder and bleeding the brake lines pedal goes to the floor and brakes are not applied.
1 after changing the front break pads the pedal began to sink to the floor.
The abs bleed procedure only gets rid of any air in the abs controller itself which is a pretty small amount.
Many drivers have reported that brake pedal goes to the floor after new master cylinder replacement.
Presence of air in brake lines.
In case your car has a drum brake system after the above most common reasons for brake pedal goes to floor check your car s rear brake shoes.
Pedal was soft and would go to the floor unless it was pumped.