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Old 07-23-2007, 10:53 PM
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1969 camaro rear brake problem

Hey, hopefully you guys can help me out here. I've got a new master cylinder and line lock system installed. I bench bled the MC and installed it on the car, bled out the entire system. My pedal still goes to the ground, its not even "spongy", its worse! I cannot "pump up" the brakes like normal, just goes to the floor. The front brakes and front line lock are working perfectly but the back ones do not lock up at all and they are both adjusted correctly. When I was bleeding the rear brakes, I was watching the reservoir level and its fluid level was barely noticeable as far as movement. I've got speed bleeders all around as well. All lines and connections are good, no leaks, no pinched lines. What the heck is wrong with my system? oh yeah, system is stock front disc, rear drum if that helps.

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Old 07-24-2007, 06:39 PM
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I need a little more info please.

was this system working before you modified it?

What is a "Speed Bleeder?"

Have you checked all the lines to make sure the lines a clear

When you bench bleed the Master did you have the return lines in the fluid so it will pump & suck @ the same time?

If the front is working that is what you want ..right ...to lock the fronts so the rears can spin freely to heat up the rubber?



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Old 07-24-2007, 11:40 PM
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I need a little more info please.
ok!
was this system working before you modified it?
no, the line lock install didn't affect it.
What is a "Speed Bleeder?"
a speed bleeder is a bleeder with a ball check valve to prevent air from being sucked back into the system.
Have you checked all the lines to make sure the lines a clear
yes
When you bench bleed the Master did you have the return lines in the fluid so it will pump & suck @ the same time?
yes
If the front is working that is what you want ..right ...to lock the fronts so the rears can spin freely to heat up the rubber?
yes, also for preloading the drivetrain at the line.
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Old 07-25-2007, 10:02 AM
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Has the master been sitting not wet for a long time ?

If so its bad rebuild /replace IMO


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Old 07-25-2007, 08:19 PM
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I had a similiar issue when I did an entire brake system rebuild on my old '84 Chevy truck. It had no brakes at all before I started. I had no pressure whatsover to the rears, and the fronts where very light on holding power. I solved my problem by looking for that little "juction block" that is mounted to the frame that all the lines then head out to the wheels from. There should be a small "peg" or button-looking pin that just needs pushed back in. At least that's what worked in my situation.


Hope that helps, Chet.
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Old 07-26-2007, 05:21 AM
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Well I bought it dry from a parts store. When I bench bled it the rear did take a lot longer than the front, they should both be about the same speed during that initial bleeding right? I installed it the same hour I bled it and used the caps but it did take about a minute after the caps came off to attach the lines.

My distribution block has an adjustable pressure differential valve in it but I'm not going to mess with its setting, that shouldn't affect the volume of fluid just the timing of the front/rear.
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