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MG TD TF 1500 - Brake line leak

It seems as soon as I fix one item, another problem pops up. I should be used to it since my hobby is old cars and old motorcycles (Harley and BMW). The metal line between the master cylinder and the 4 way block leaks at the master cylinder. Not much, but enough to drain the cylinder in a short time. I did not want to tighten it too much. New master cylinder, original metal brake line. The flared fitting on the line seems to be a bit rough. I was going to order a new line, but hoped to fix it today, so I can move onto the next problem. Few of my old bikes had juice brakes, so still a bit new on this modern stuff.

Any suggestions? Crank down on it harder? Put on some high pressure sealer? Teflon tape? Polish the flared end?
CH Hull

IMHO,,,, You would be best to get a new brake line and new fittings,,


It's the least expensive brake line in the car. <$10 from A/S. And it comes with new fittings. Bud
Bud Krueger

Pretty good bet the flared line cracked. The ends on the threaded fittings tend to spread and flare out as well, so best to replace the line. If you have a local machine shop or garage that fabricates lines, they could perhaps use your threaded ends and make a new one.George
George Butz

No teflon tape on the brake fittings. Not only does it not do any good (seal is at the flair fitting), but if a a thread of it get into the brake system, it becomes transparent and can't be seen if it causes any problems. Cheers - Dave
David DuBois

Looks as if I found an easy fix to Chuck's problem. A step in my recent switch to silicon and installing the servo included constructing/installing a new NiCu line fropm the m/c to the 4-way. Once I installed the servo the short line became obsolete. It arrived at Chuck's yesterday. Bud
Bud Krueger

This thread was discussed between 25/09/2013 and 29/09/2013

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