Have someone sit in the car and pump the brake pedal. After pumping a few times, tell them to hold the petal down until you tell them to let up. While they hold the pedal down, loosen one of the bleed nipples on the brake cylinder or caliper. This will allow compress air to exit until fluid jets out. Close the bleed nipple after the pressure is released. Once the nipple is closed, your partner can resume pumping the pedal. Repeat this process on all the brake cylinders until there is no air left in the system and the pedal is firm. Be sure to check the fluid levels on the master cylinder often. It will lower as the fluid is forced in to the lines.
Then you need to bleed the brake system to remove the air.
Bleed the brake system.
air in the brake lines theyneed bleed
The bleed screw on the calipers of brake systems are for 'bleeding' air out of the brake lines.
The same way as you bleed any other brake system.
You Probably have air in your brake lines Or you may have low brake fluid. Mechanics can bleed the brake lines which will remove the air out of the lines. I do not recommend doing this yourself.
bleed your brakes again...there's air in the lines
Air trapped in the brake lines. Bleed your brakes and that will solve the problem.
You probably have air in the brake hydraulic line. Bleed the air out of the brake lines.
You have to bleed the brake lines because if there is any air in the lines the brakes will fail. If there is any air in the brake line, when you step on the peddle the air will compress and not transfer the energy to the brake caliper or drum and not stop the car.
If you did not open any brake lines and only replaced the pads there is no need to bleed the system.
When you work on brake system you want to remember to bleed the brake lines.