Brake bleeding troubles

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Old Sep 9, 2023 | 11:19 AM
  #1  
tkcutlass's Avatar
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From: CT
Brake bleeding troubles

This is a timely topic, for I just finished the lines and master cylinder.
I tried a hand pump bleader with no luck then picked up an amazon version of the ares.
I bench bled the master cylinder.
All lines are new so I am wondering if I have to do several passes (done 2 already)
The pedal doesn't seem to pump up at all.
I haven't seen any fluid leaks but from what I read just because the fluid isn't leaking doesn't mean air is not getting in.
4-way disc proportional valve attached to master.

I haven't had a chance to bother a helper or wife yet.


Old Sep 9, 2023 | 01:19 PM
  #2  
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From: Poteau, Ok
I moved your post to it's own thread. Is the MC and the booster pin and actuator compatible? In other words not a short booster pin going into a deep MC plunger.

Last edited by oldcutlass; Sep 9, 2023 at 01:21 PM.
Old Sep 9, 2023 | 01:54 PM
  #3  
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I was curious when my e-mail URL link didn't work after several tries....thought I was losing it.
Old Sep 9, 2023 | 03:34 PM
  #4  
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Good news bad news.
Found some reasons for the problem.
Got the wife to press the pedal a few times
Slight leak at the master cylinder on one of the plugs.
Then found a puddle in back where the rubber line meets the steel line at the rear axle.
Tried 4 or 5 times to get the leak to stop i think it actually got worse.
I even took the connection totally apart and reseated it.
I tried the tighten-loosen procedure for stainless lines to no avail.
Old Sep 12, 2023 | 06:05 PM
  #5  
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Some progress.
Got the front of the rubber line to stop leaking. making sure the line goes straight in and is centered was the trick.
Got one of the lines to the T-connector sured up but the other is giving me trouble tough getting the line straight and centered.
Next attempt I think I am going to remove that line completely and put the top connection in first. The other side is much easier to get at.


Old Sep 19, 2023 | 12:16 PM
  #6  
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So my problem wasn't bleeding troubles, once the system was pressurized it leaked like crazy.
Kind of what I expected but was hoping not.
With a helper pressing the pedal, It seemed as soon as fixed one leak it had enough pressure to cause another.
So after around 8-10 leaks and replacing one of the rear lines I believe it's leak-free.





Old Sep 20, 2023 | 10:16 AM
  #7  
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From: Colorado - Front Range
I'm sorry to hear of your leak-troubles, TK. Though I appreciate the thread. I re-plumbed my entire system last year, and the first time on the road things seemed copacetic. However, the next time out the pedal seemed mushy, eventually going to the floor and barely stopping the car. Talk about Pucker Factor, LOL! With the info you've posted here, I'm going to revisit the entire system and see if I can find any anomalies.
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