Fluid leak

[Cudadan2]

I have a brake fluid leak where line goes in to master cyl. Have changed master cyl but line goes all the way in and still leaks looks like I am missing some thing am I thinking wrong an if so what

[B RON CO]

Hi, you are not missing any parts, and the double flare looks OK. I don't know why it would leak. Do you think you are tightening it enough? Good luck

[Cudadan2]

Thanks will have to check out more it screws all the way in like fitting is all most in side of master cyl and it finely tightens down but still leaks

[Cudadan2]

This is how far it goes in with fitting catching first thread

[bubba22349]

Thats reason that the brake line goes so far into the master cylinder port and you have a leak, because yes you are missing the brass fitting for the port of the master cylinder! The fitting goes into the master cylinders port and provides the inverted flare seat that the brake line needs to be able to tighten against. You should be able to find one at most good auto parts stores such as NAPA or if not try at your local auto wreking yards too. I think it will have an 1/4 inch tubing thread into the master but be sure to check to see what threads yours has. adistionaly there is a special soft copper flat washer that seals it against the end of the master cylinder, the other will have the 3/16 brake line thread "it's a tubing thread" with its inverted flare seat. Good luck

[Cudadan2]

Thanks I thought so and was this way when I bought car has never had good brakes

[bubba22349]

Yes I bet, and without it it's a wonder that you have any brakes at all! For reference the below link is semular to what it would look like though it's probally a different thread on the master' port, I can't really tell the thread pitch by looking at your top picture to know what thread yours is. Good luck

https://www.lawsonproducts.com/lawson/B ... r/86679.lp

[B RON CO]

Hi, I will agree with Bubba. My 66 Mustang fruit jar has no adapter. I also don't have a port for the brake light switch. You can tell if the female port is double flare if there is a round bump which mates with the flare shape of the tube. My big mistake was thinking the flare threads were different from other threads and would not screw together. Good luck