$25 to whoever diagnoses my brake problem

[ZYouL8R]

If using a pressure bleeder you shouldn't get air since it is forcing fluid through the system, at some point it should force clear air free fluid in theory. Does it have abs? If it does if you get major air and it gets into age unit if can be difficult to get out without special equipment/procedures.

No ABS, it's been deleted for many years now.

Yes, I started with gravity bleeding then moved to the pressure bleeder. Air bubbles either way. I've received differing opinions on whether or not a pressure bleeder will get air out of a MC. I think it would, but some people say it won't since you're not compressing the cylinder, but I don't see why that would matter.

[ZYouL8R]

I don't know if this makes a difference, but I have a very firm pedal with the car off or in ACC, but the second the engine starts, I lose everything.

[shumpertdavid]

That's because with key/engine off you have no vacuum assist. Is brake fluid leaking from rear,of master when you remove it, if the seal is bad in it and you need to replace the master.

[ZYouL8R]

That's because with key/engine off you have no vacuum assist. Is brake fluid leaking from rear,of master when you remove it, if the seal is bad in it and you need to replace the master.

No fluid there, checked earlier.

[shumpertdavid]

That's pretty well the basics covered without seeing it in person

[psdtech]

Pay this guy^^
Needs a m/c

[kingjason]

You can bleed the master on the car also. With a helper pumping the brake pedal and holding it crack open one of the lines on the mc, do this about three times then move to the next big line for three times. It is just like bleeding the wheel cylinders. That should clear it if its not sucking in air somewhere. Then move to your four corners starting with the passenger rear. I just did this with my Galaxie.

[kingjason]

Pay this guy^^
Needs a m/c

Or this

[shumpertdavid]

For the,hydraulic system to seem so,simple they sure can be a kick,in the nuts. I've had some real nut crushers over the years working on cars to have it be something that makes me look or feel stupid, it sure is a great feeling when its finally fixed.

[garycrist]

Is the pedal firm and at the correct height?

[JimD]

I ran into this once on a cj-7, air in lines and zero leaks. I also work on cars for a living and do brakes alot....This POS kicked my ass for 2 weeks, tried everything including power bleeding, changing "could be" parts, etc. First pedal stroke went to floor then pumped up and had good pedal. Ended up being a hairline crack on the rear axle brake line.

[ZYouL8R]

Is the pedal firm and at the correct height?

Pedal is not firm at all. It goes straight to the floor when depressed.

[turbodave]

What size M/C? 7/8,15/16's 1 1/8 inches? and what size piston calipers? It does sound like you have a leak

[46Tbird]

Make sure the caliper bleeder screws are pointed up... meaning they are the highest point in the caliper's hydraulic system.

If they are not, then swap the calipers side-to-side, and then they should be.

It kind of sounds like air trapped in the caliper - and you will NEVER bleed it out since the brake fluid escapes the bleeder before forcing the air out.

[ZYouL8R]

What size M/C? 7/8,15/16's 1 1/8 inches? and what size piston calipers? It does sound like you have a leak

I have no idea. Stock LS1 F-body.

Make sure the caliper bleeder screws are pointed up... meaning they are the highest point in the caliper's hydraulic system.

If they are not, then swap the calipers side-to-side, and then they should be.

It kind of sounds like air trapped in the caliper - and you will NEVER bleed it out since the brake fluid escapes the bleeder before forcing the air out.

Bleeders are pointed up, calibers are on the right side. If it is air in the calipers, is there really no way to get it out? We've put a man on the moon damnit!