I've got a gradual loss of pressure in my breaking system. (increased pedal travel over a few days) I just installed extended brake lines as a part of my new lift kit. I can see that fluid is seeping from the joint on the rear diff (brake line comes down from chassis and splits out to each rear wheel). I've got the lines as tight as possible without stripping them but the fluid is still seeping. I thought that there might need to be a copper crush washer on all the joints but the lines don't thread in deep enough to crush them anyway.

Does anyone have any ideas about how to seal this system. I'm about to take the plunge and re-do my brake lines all the way around but I would so much just rather fix the problem.

Is the fitting cross threaded by chance? Have you tried taking it off and reinstalling it again? Sometimes they don't thread in right, I'm sure that's the case here. It's not threading in far enough because you said:

the lines don't thread in deep enough to crush them anyway

These do not use crush washers, they are flare fittings. They do, however, need to thread in far enough to squeeze the flange on the line tight in the fitting.

I wouldn't mess around with anything else. Redoing the rest of the brake system won't make this problem go away.

Make an extention line.

The way I understand it he already did but the fitting where the new line connects is leaking.

I'll try un threading and rethreading. Hopefully, I don't have to make a new end. The only reason I don't want to put a bunch of money into my brakes is I'm eventually getting axles out of a CUCV and I'll have to upgrade then anyway. What a pain in the but this has become. I hate brakes. You can't do anything without having to bleed them and the only help I have is my wife. So, I don't have any help. The kit I rented from the auto parts store sucks too. Hopefully this re-thread works and I'll be done with it.

. You can't do anything without having to bleed them and the only help I have is my wife. So, I don't have any help. .


:D too funny josh

Interesting, I love brake work because it is really simple. It is important to have some patient help though... ):h

when you take the line off check the flair end to see if it cracked. it happened to me i just cut end off and reflaired it. or like high sierra said did u maby cross thread it if i remember wright i think that t fitting is brass i may be wrong it is very easy to cross thread them

when you take the line off check the flair end to see if it cracked. it happened to me i just cut end off and reflaired it. or like high sierra said did u maby cross thread it if i remember wright i think that t fitting is brass i may be wrong it is very easy to cross thread them

Keep in mind that you need to use a special flairing tool on brake lines.

It's called a double flair or a rollover flair ( depends on where you live )

What ever you do, do not use a standard single edge flat flair.

..Ray