Question about 1983 Ford Thunderbird

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No Brakes, changed Booster, thought it was air in the lines. When bleeding no fluid coming out of front right and back brake bleeder valves. Checked rubber line, is ok. Clogged somewhere in the line. Have any Ideas?

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Marc Helfrich

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Hello teresa st108! You replaced the power booster, and you attached the vacuum hose to the booster right? good master cylinder?, and they where installed correctly? This should correct a very hard to push down brake pedal. If your brake pedal is spongy, easy to push down to the floor with little or no brake action.(this is air in the system, or faulty master cylinder.) If master cylinder is known good! Make sure it is filled with new brake fluid. You can begin gravity bleeding the system(can be messy on driveway) Leave master cyl cap/lid on loosely, yes letting air in so fluid can gravity feed into lines and do not let master cyl run dry of fluid! At each wheel open bleeder screw slightly, enough to let fluid seep out. Add more brake fluid to master cyl as needed. As you check each wheel for a nice fluid mess, close the bleeder screw snug not tight, dont over tighten!(if any of the four wheel locations remain dry, may need to replace defective line or hose) Ready for final bleeding! Make sure master cyl is full of brake fluid, install cap/lid securely now. Have someone push down on brake pedal(holding) while someone opens bleeder screws briefly and snugs closed again at each wheel. If all your brake linings are in good condition you should have brakes. Good Luck, kind regards

Posted on Mar 02, 2011

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Johnny Brown

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Is the master cylinder good? a bad master can cause this also did you bleed the master first before bleeding at the wheel and also make sure the bleeder screw is clean, if the hose is good then theres only a few things, a bad master or a master that wasnt bleed, try bleeding the master first then try rebleeding the brakes.

Posted on Mar 01, 2011

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you should get them checked""

"i would be carefull driving"

but if you dont think air got trapped in there.....you should try upgrading those rubber hoses to steel kind.....

hope this helps XD

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