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Old Jan 16, 2013 | 12:34 PM
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Default Brake Line Question

I'm having trouble with my brake lines. They are brand new and the stainless steel kit. I bleed my brakes last week with the Motive brake bleeding system and noticed that the rear line that goes across from one side to the other is leaking on the passenger side where it screws onto the block. Then, the brake line on the same passenger side(the one going into the caliper and into the rubber line) started leaking on the rubber hose side, but this one was seeping through the top of the screw in fitting, as if the flare wasn't done right.

Was I suppose to add some type of sealant to the threads?
What do you guys think about the rear caliper line, is the flare not done right?
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Old Jan 16, 2013 | 12:56 PM
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This typical of stainless steels lines due to their hardness and is the number one reason many people will never ever use them.
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Old Jan 16, 2013 | 01:18 PM
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I just did all new lines, calipers etc..have not bled them yet but went with regular steel as I heard people have this issue, maybe take that cross over line out, check it out? replace with mild steel line if indeed flares are not correct...
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Old Jan 16, 2013 | 02:51 PM
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The rear cross line appears to be leaking through the threads. I'm going to try using some type of thread sealant and see if that will work. As for the caliper line, do you guys think trying to flare it again will fix that?
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Old Jan 16, 2013 | 03:01 PM
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No thread sealer is required and won't work any way.
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Old Jan 16, 2013 | 04:08 PM
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Originally Posted by Mike Ward
No thread sealer is required and won't work any way.


It's a compression fitting, the threads themselves don't seal.
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Old Jan 16, 2013 | 04:18 PM
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I have new SS lines and mine were leaking and I re-tightened them as much as I possibly could.....guess I achieved full compression because so far no more leaks
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Old Jan 16, 2013 | 04:51 PM
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Originally Posted by Shark Racer


It's a compression fitting, the threads themselves don't seal.
Originally Posted by garym52
I have new SS lines and mine were leaking and I re-tightened them as much as I possibly could.....guess I achieved full compression because so far no more leaks
I retightened both of them, and didn't want to go any further, afraid of them stripping the thread on the block. So, I basically need two new lines, is what I'm hearing?
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Old Jan 16, 2013 | 05:07 PM
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Back the leaking fittings off until they are loose again and then re-tighten them. Do this a couple of times. Sometimes this works to re-seat the flare a little more. This works well on steel lines, but the ss lines are a lot harder.
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Old Jan 16, 2013 | 09:52 PM
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Originally Posted by MidShark
Back the leaking fittings off until they are loose again and then re-tighten them. Do this a couple of times. Sometimes this works to re-seat the flare a little more. This works well on steel lines, but the ss lines are a lot harder.
I'll give this a try.
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Old Jan 16, 2013 | 10:14 PM
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This is interesting. I will be doing lines on my resto-mod in the near future. I plan on doing SS lines, have heard of minor issues, so curious to see how this goes or the resolution..
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Old Jan 16, 2013 | 11:11 PM
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Originally Posted by MidShark
Back the leaking fittings off until they are loose again and then re-tighten them. Do this a couple of times. Sometimes this works to re-seat the flare a little more. This works well on steel lines, but the ss lines are a lot harder.

That works well with adding brake fluid to the ouside of the flare underneath the nut and to the threads, all to act as a lubicant.
Don't be afraid to strip the threads, you'll round the hex before that.
Use a real tube wrench.
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Old Jan 16, 2013 | 11:49 PM
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Originally Posted by noonie

That works well with adding brake fluid to the ouside of the flare underneath the nut and to the threads, all to act as a lubicant.
Don't be afraid to strip the threads, you'll round the hex before that.
Use a real tube wrench.
It should be well lubed up then since this thing has been leaking for a few days now. I hope this works.
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Old Jan 17, 2013 | 09:48 AM
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No leaks on my new SS lines, anywhere.
Wasn't aware this was an issue.
Lines came from Inline Tube.
Carter
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