Replaced all brake lines no leaks but cant get it to stay up

What kind of issues are you having,I might be able to help and it's not so hard the front of master cylinder is for rear brakes and the rear of master cylinder is for rear brakes and if your having issues with calipers staying stuck it's possible one of the lines is stuck on the side it is staying stuck,rear wheel cylinders leak many of the times so that should be checked if your having a issue like that if brake pedal is too hard booster is bad any other questions just let me know.

may be bad master cylinder ~ you try to gravity bleed them first?

or you may have to bench bleed the master cylinder then re-install, gravity bleed to start

then finish off with the one-man bleeder or 2 person technique


i don't know how you did it, so i'm covering my bases by saying all that

There are one of two problems. First your lines or calipers are leaking. Second your power brake booster has a hole in the diaphragm and needs to be replaced. Look on the firewall it will be a round metal container.

You CANNOT repair a leaky line, I'm afraid. You will need to replace the leaky section. Don;t forget to bleed the brakes afterwards.

brake lines are available in several lenghts, you can do it in two pieces which will make life easier, use a use a brake union not a compression fitting, if the line is too long coil it near the master, it will absorb vibration

that would be brake fluid leaking you have a broken line..

You may have a leak in the booster or master cylinder. You can put a pressure tester on the system to test for leaks. It does sound like you have an air leak.
You can try to bleed the master cylinder, then slave cylinder, then brake lines.

Have some one step on brake while you watch for the leak. The fittings for the extention may not be the same as the OE line causing a leak.

metal

start from the farthest, right rear, left rear, right front, then left front, take some time in bleeding your left front since it has more air induced during line replacement. good luck!