Rear caliper line C3
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
I find that it is frequently caused by bad alignment of the brake tube going into the caliper. I do see from earlier posts that several people suggest a good tight fit by cranking down on the fitting. Others suggested approximately 30 ft pounds of torque would work just fine.
First I would get my Tube Wrenches out so I can remove or tighten the lines without rounding it off (too easily). Second, I would be sure the connection clean and dry when you put the brake line into the caliper.
It really boils down to the "condition" of the parts that are connecting together. A corroded brake line might never seal properly.
It sounds like the answer might be to "crank it down snug and then give it another 20-30* of rotation".
First I would get my Tube Wrenches out so I can remove or tighten the lines without rounding it off (too easily). Second, I would be sure the connection clean and dry when you put the brake line into the caliper.
It really boils down to the "condition" of the parts that are connecting together. A corroded brake line might never seal properly.
It sounds like the answer might be to "crank it down snug and then give it another 20-30* of rotation".
Safety Car
Joined: May 2004
Posts: 4,364
Likes: 1,588
From: los altos hills california
Once you feel by hand that it is seated, then with the other hand and holding the line still, tighten the fitting snugly. With SS lines I've found that loosening a bit and tightening a bit more helps the flare and seat to conform to each other. The flare nut contributes nothing to sealing the connection so don't bother trying to put teflon tape or anything like that on the nut.
If this fails there may be some imperfections in the joint so soft materials like copper or aluminum flared washers will usually fix that problem.
Thread Starter
Burning Brakes
Joined: Oct 2020
Posts: 866
Likes: 73
Thanks for all the response i did use my flare wrench on the nut and received a half turn. Pumped brakes no leak . Waiting over night to see any dribble because i have to bleed i assume all four calipers because that flare nut was sucking air into system.
