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Originally Posted by Maximus442
hello, ok, i recently purchused a a 1970 olds 442, and we are in the process of bleed the brakes, (we changed some brake lines), now, we are getting good fluid flow, but once we close the screw, the brakes dont work! what are we doing wrong? we are pumping the breaks 3 times, holding the brake to the floor, opening the screw, aloowing the air to escape, and the brake fluid to flow, closing the screw and repeating. nothing we try is working! any suggestions? what are we doing wrong?
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Is there good pressure coming out of the bleeder valve when you open it under pressure? The brake fluid should squirt several inches as soon as the bleeder is opened. If it doesn't, check the master cylinder, brake booster (if you have one), and brake pedel linkage. Also make sure that you are doing this on level ground.