Brake Pedal Goes Down to Floor A Step-by-Step Guide to Diagnosis

Causes and fixes when a brake pedal sinks suddenly all the way to the floor. Posible Causes Low on Brake Fluid Possible Brake Fluid Leak Air ... if your pedal is going to the floor, make sure the master cylinder is good. Any vehicle after 10 years is likely to have a bad master cylinder. Depress the brake pedal several times slowly. If the pedal goes down farther the first time but gradually rises after the second or third ... It could be air in the brake fluid system, or a loose brake pedal switch. Or even a loose brake. Either way the brake pedal should feel firm but not take too ... Start at the master cylinder, loosening the brake lines and bleeding from there. Pump it up, hold it down, bleed. If there's air there, it takes a while. Brake light coming on indicates a half-system failure. Pedal going to the floor indicates either a leak or air in the system. If you are not ... It's not actually on the floor; you still have some breaking if only one of the two circuits fails. I'd first look for a leaking line, usually ... The only way fluid levels decreases is by worn brakes (taking more fluid to push worn pads further to make contact puts the fluid in the caliper ... Always start bleeding farthest away from the master cylinder. ie start at the right rear, then next farthest (left rear, then front right and front left last. A quick check of the brake booster must be conducted with the engine off. Pump the brake pedal slowly several times. This will gradually deplete ...