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Brake pedal goes to floor... still! 200 1986

posted by  wfburnett on  Sun Sep 11 20:19 CST 2011
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last visit: Sun Sep 11 22:33 CST 2011
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I need some help! I have a 1986 244 that I got cheap for my son. It runs great, but when I got it, it had a bad leak in the brake junction. Seemed like an easy fix! lol Was I wrong! To make along story short, 3 brake lines, 2 brake hoses, and one brake caliper later we were ready to bleed the brakes! I got out my Bentley manual and we followed the bleeding procedures to a T! when we were done, we still had a pedal that went all the way to the floor.

So we checked for leaks at each wheel and junction of hose and brake line. Can't find any leaks. Re-bled the system again to make sure. Same result. So we followed the Bentley manual and also talked to our local parts guy and everything pointed to the master cylinder. so we replaced the master cylinder and re-bled the brakes... SAME RESULT! PEDAL GOES TO FLOOR! RRRRRRR

Then it dawned on me that I failed to bench bleed the master Cylinder first. Bentley manual says nothing about this. So we went online and saw how to do it. We pulled it and started over. We have bled the hell out of the system and still have a pedal that goes to the floor. With the car off, you can pump it up and it then slowly bleeds down again. When you turn the car on, the pedal goes to the floor and you can't pump it up at all.

Could this be related to the booseter at all? Does the sensor in the junction have anything to do with this? I read somewhere since it is a split system you need to remove it first?

I am lost and about to tow it to a mechanic, but brakes aren't that complicated and I am not ready to give in yet! Help please?

If I am an idiot and doing something painfully obviously wrong I will take my lumps! lol






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