the brake sytem including master cylinder and booster are all new the rear right line will not bleed up and I can‘t get a brake I need some advice I have exhausted everything I know and am at wits end. thanks
If this car has drum brakes in the rear: The automatic brake adjuster that is located between the bottom of the brake shoes may be improperly installed, too far out of adjustment, or sticking. If drum brakes are too far out of adjustment, the pistons inside the brake cylinder on that wheel extend too far and the brake pedal feels spongy. If the brake shoes don't contact the brake drum, the automatic brake adjuster doesn't work. Remove the brake adjuster. Unscrew the two halves. Apply a touch of disk brake caliper pin grease to the threads. Reassemble the brake adjuster. Wipe off any excess grease. Reinstall the the brake adjuster. Check the installation of the brake adjuster for proper installation, it is possible to install this part backwards and it won't work. Adjust the brake shoes until they just start to contact the brake drum, then back it off a little. Back the car up and sharply apply the brakes. Repeat this process a few times. This actuates the automatic brake adjuster.
Sounds like air stuck in the system somewhere. Is fluid coming out of the line ok? Continuous air bubbles means a leak somewhere. Check the fittings on the master cylinder for leaks, as well as replace the bleeder screw. Get a Mighty Vac at the auto parts store, you'll get a much better bleed with that - might get out some stubborn air bubbles (ask me how I know this). If you have a stuck piston and a good bleed, you'll typically get a hard pedal, not a soft one. If it's drum rear and you replaced shoes/cylinder, you may want to take that drum back apart and make sure everything stayed together when you put it together. Good luck, hope you figure it out.
if you can't get it to bleed the air out, that means that the line is getting air into it from a crack possibley, or the little valve on the back of the caliper is not shutting off all the way and your getting air in there. Close the valve and pump the brakes for a few times hard. then inspect every inch of that line for leaks. It is also possible that the lines ARE bled and the brake caliper piston is stuck. on a 92 it is possible that the piston is stuck, especially if you live up north where they salt the roads a lot in the winter.
