While changing the brake pads, i unscrew the rear pistons all the way, and now my brakes wont work, help pleas?

i accidentally unscrewed the rear brake pistons and fluid leaked, but i managed to screw it back in and put new pads, but i was done, i went to pump my brakes, the pressure seems to be escaping and when i drive, i%26#039;ve to floor the brake pedal for the car to stop. even then its tough . help please.


|||You need to bleed the air out of the calipers, and hopefully you hadn%26#039;t done more damage to them when you had put them back together.|||you accidentally destroyed the caliper it needs to be replaced. sorry|||replace your calipers|||rear caliper needs to be replaced and bleed|||You%26#039;ve let air into the brake system.You will have to bleed the brakes.Simple procedure:with engine off,have someone pump the brake pedal until it won%26#039;t move,hold down pedal,you unscrew that screw again[bleeder screw]until the pedal drops to the floor.Repeat for all four tires.You may have to bleed the same brake twice. What you are looking for is fluid to come out of bleeder screw. After bleeding all brakes,check brake fluid level,top off[dot 3 or4]restart engine ,pump brakes,check for pedal pressure.Road test,slowly.|||I think you lost brake pressure due to a tear in the caliper boot. You can try to bleed like the last answer, just make sure you start at the caliper that is furthest away from the master cylinder(where you pour in the fluid). He%26#039;s right, make sure you keep the reservoir full while bleeding. Look for air bubbles while bleeding. A constant stream of fluid is what you are looking for. Good luck. |||you have damaged the caliper seal... time to get them rekitted at local brake shop...ps stop driving it...