Brake Pedal's Fall from Glory Causes and Consequences of a Sinking Pedal

My braking pedal sometimes goes to floor during driving, mainly when I'm in a traffic jam and using the brakes actively. If the pedal drops while pushing lightly on the brake pedal, but it's firm if you hit the pedal sharply and hold, then it's the seals in the ... The brake pedal still slowly goes to the floor. It is drivable and stops great, but at a stop light I need to let up and step on the brake pedal a couple of ... The pedal goes basically all the way to the floor on the first pump, when I pump the brakes again the pedal rises, feels very firm and the truck stops well. The pedal suddenly started dropping to the floor, but only when running. I checked it and the brake booster was bad, so I replaced it. There was a previous thread that indicated the rubber brake lines are a probable source of weak brakes. ... https://www.amazon.com/dp/B0130X8XIE? There needs to be somewhere for the pressure to go. And Yes, even if the pedal goes to the floor easily it will pump fluid to the bleeders. That ... If your pedal goes all the way to the floor and you have no leaks, the master cyl is bypassing and needs to be replaced. It sounds like you have an internal leak in your brake master cylinder. With steady pressure the brake pedal should not move, if it does then it ... 1) Low Fluid possibly due to a leak (might be able to just add more unless it leaks out again) · 2) Air in the hydraulic lines (air compresses ...