What is a good way to get brake lines unstuck without twisting them all up? I wanted to replace a leaky rear calipar but the brake line is stuck on pretty tight. I tried spraying it to help lossen the corrosion up and tapping on a flare nut wrench to break it free but didn't do the trick.

Thanks, Don

I have had good luck with a spray named pb blaster from napa...let it sit for a few hours or overnight

What is a good way to get brake lines unstuck without twisting them all up? I wanted to replace a leaky rear calipar but the brake line is stuck on pretty tight. I tried spraying it to help lossen the corrosion up and tapping on a flare nut wrench to break it free but didn't do the trick.

Thanks, Don

and use a good flare wrench..NOT crecent wrench or visegrips

I have had good luck with a spray named pb blaster from napa...let it sit for a few hours or overnight

Is the fitting stuck on the line? If it's that bad it might be time for it to retire. I would cut the line, remove the fitting and then replace the line. Brake lines are cheap, I'd rather replace them than fool with them.

Originally Posted by Shannon Custalow http://www.chevelles.com/forums/olp/images/buttons/viewpost.gif (http://www.chevelles.com/forums/showthread.php?p=1665808#post1665808)
I have had good luck with a spray named pb blaster from napa...let it sit for a few hours or overnight

and use a good flare wrench..NOT crecent wrench or visegrips


I think that's what I used, but they're stuck pretty tight. I also bought a new set of flare nut wrenches so I wouldn't mess up the hex on the brake line.


OlleRe: Stuck Brake Lines
Is the fitting stuck on the line? If it's that bad it might be time for it to retire. I would cut the line, remove the fitting and then replace the line. Brake lines are cheap, I'd rather replace them than fool with them.

Yep, well, either the line or to the calipar. I think I'll do like you suggest and just replace the lines.

Thanks:yes:

I think I'll do like you suggest and just replace the lines

Mind if I cut in? Thanx. How hard is it to replace the hard lines? New ones going to bolt in easy or are you going to have to take the car apart in order to get it in there?

Shouldn't be too bad, for the rear lines, they come out of a tee from a flex hose on the rearend and run to the calipars.

Little heat may help also.

Knowing my luck, I'd torch my car. I always wanted to say my cars pretty hot.....I might try that anyways.

If you're planning on replacing the lines, just cut them flush with the fittings and use a 6-point socket to remove them. The fittings can be a pita to remove if you happen to round them off, but this method is pretty fool proof.

If you're planning on replacing the lines, just cut them flush with the fittings and use a 6-point socket to remove them. The fittings can be a pita to remove if you happen to round them off, but this method is pretty fool proof.


Thanks Olle....that's a good tip. :thumbsup: