Brake peddle goes to floor when vehicle is started brakes caliper rotor have just been replacedand bleed
Apr 2, 2013 at 5:12 PM
CARADIODOC
✓Experienced Mechanic
34,396 POSTS
If you bled the brakes with a helper and the brake pedal was pushed to the floor, the master cylinder likely got damaged. Professionals never press it more than half way down. Pushing it too far runs the pistons over crud and corrosion that build up in the bottoms of the bores. The lip seals can be torn on that crud. Often that damage doesn't show up for a few days.