Brake lines leaking

SLICK03GT

MEMBER
2003 FORD MUSTANG
V8
2WD
MANUAL
103,000 MILES

I replaced my stock 10.6 inch rotors with used cobra calipers and 13 inch rotors and swapped the soft lines. The joint on the driver side where the soft lines meet the hard lines is dripping when I apply pressure to the lines, would not bleeding the brakes have something to do with it leaking? What should I do? Buy new lines? Since the calipers are used, do you think the seals inside will give me problems in the future? It came with the drilled and slotted performance rotors, but they are a little worn. Do you know anywhere I can get them resurfaced? Do they really help that much with a stock car for day to day driving?

3 Replies

MHPAUTOS

MECHANIC
31,938 POSTS

Hi there,

You will have to ensure that the pipe connection is very clean and tight, look at both old and new to ensure that they are the same type of union, this will not allow you to bleed the brakes and it can't be driven until it is repaired, normal machining won't work on these rotors they must be surfaced ground, and there is no advantage what so ever in standard road use, in road use they are purely for looks only. Here are videos to help you make your own line or replace the brake flex hose.

https://youtu.be/sO43p4ZFUiM

and

https://youtu.be/1Prs_coIuCg

The process is the same in most cases.

mark (mhpautos)

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Wednesday, May 12th, 2010 AT 1:06 AM

BOBANDHISMUSTANG

MEMBER
1 POST
2000 FORD MUSTANG
145,000 MILES

I went to change my rear brakes on my car this evening and everything went smoothly except when everything was replaced and reassembled and tried out the brake pedal, thinking I might have forgotten to tighten the bleeder bolt, I got under and checked. There was a new, substantial puddle of fluid but the bleeder bolt was fastened tightly. I wiped it down and repeated the brakes and it almost looks like the fluid is coming from the cable under the caliper assembly, the ebrake cable I think. I'm pretty sure there is no fluid in a cable but I'm otherwise stumped.

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Thursday, March 11th, 2021 AT 5:36 PM (Merged)

MHPAUTOS

MECHANIC
31,938 POSTS

The only place it can be coming from is the caliper it self, sometimes when pushing back the piston you can damage the seal, to make sure drop off caliper but leave pipe connected, place a piece of wood between the pads and have someone apply the brakes, was down and watch for any leaks, you should see it if it is leaking.

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Thursday, March 11th, 2021 AT 5:36 PM (Merged)