Question about 1996 Oldsmobile 88

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Brakes do not work until pedal is depressed almost to floor.

-Gave out suddenly.
-Seemed to be a loss of pressure in the system, it reminded me of driving with broken brake lines which happened to me once before.
-Brake resevoir is still full of fluid after parking the car for several days. No fluid on floor of garage.
-Could this be due to a broken pump?

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Bleed the sistem

Posted on Dec 28, 2008

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It is very difficult to diagnose this problem with the little bit of information you gave. If the brakes are drum brakes check to see if the brake cylinder is working and has no leaks, lift the rubber seals and make sure there are no leaks there, check the brake adjuster make sure that works okay. If everything works and you bled the brakes properly, then the problem is most likely is the master cylinder or the wheel cylinder.



While bleeding the brakes always make sure you check the master cylinder reservoir to make sure the fluid level is up so you do not get air in the brake lines. When bleeding the brakes did you have someone press down hard on the brake pedal hold the pressure on the brake pedal when opening the bleeder then push the brake pedal to the floor keep it there, until you tightened the bleeder, then pump the brakes up and hold it there, while you repeated the bleeding operation by opening the bleeder when the brake pedal go\'s to the floor keep the pedal down until you tighten the bleeder and then pump the brake pedal back up then check the fluid level in the reservoir, keep doing it until the brake fluid shows no sign of air.



If the brake pedal is pumping up during the bleeding process and you made sure you got all the air out of the brakes and then the pedal go\'s to the floor, make sure the fluid level is correct in the reservoir and the bleeder is closed tight and there are no leaks in the lines, wheel cylinder, brake cylinder the brake adjuster is working and master cylinder, and if you still have no brakes then it must be a defective piston in the wheel or brake cylinder, if there is a seal problem with the pistons you will not get any pressure to push the brake fluid. let me know how you are doing.

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So I just changed the clutch master cylinder and the braided brake line in my 2000 camaro ss and am trying to bleed the system. The routine I'm using is typical. Pump the pedal 30 times keep it depres


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You may have air in your braking system. You will need to bleed your brakes.

Some people say it is ok to just bleed the front brake that is on the same side as the master cylinder. I personally feel that all 4 brakes should be bled.

On each caliper/drum there should be a small nipple type fitting with a (usually) 8mm nut at its base. Loosening this nut will allow brake fluid to seep from the nipple opening.

Work with a partner. Remove your first wheel of the brake to be worked on. Loosen the 8mm nut. Have your assistant depress the brake pedal steadily to the floor and hold. If a steady stream of fluid comes out tighten the nut and move on to the next brake. If the brake fluid comes out sputtering with air, tighten the nut after your assistant depressed the brake (but ensure they kept the pedal to the floor). Have them take their foot off the brake. Loosen the nut again and have them depress the brake fully again. Repeat until steady stream of fluid comes out with no air.

Do this for all 4 brakes.

Once complete refill the reservoir to the recommended fill line.

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