i have a 79 and i had a hold in the front left brake line. went out bought the new line bled the breaks and i still have no brake pedal and when i bleed the rear right the light goes off but then when i tighten it back up and press the brake pedal the light comes on and i still have no brakes. anything else i could check do to get this fixed before i have to go to work monday morning? HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thanks all

Sounds like air is still in the system, mainly in the front. Keep bleeding, you'll get there. Concentrate on the fronts, especially the left. The reason the light goes off when you open the rear is the little switch in the proportioning valve centers up. When you close the rear bleeder and step on the pedal the higher pressure in the rear moves it forward turning the light on.

ok i have bled and bled and still no luck with brakes once in a while i get them but let the car sit for a bit and they go away the light comes back on and i start bleedin again and the same thing is there just that much air in the lines i have been thru a 32 oz bottle of fluid so im at a point to give up and try again later if i can figure out what to do later. im at a loss here can someone please help me ....................

Try a vacuum bleeder and tilt the caliper so the bleeder screw is at the top. That should hopefully get rid of any air hiding in there.

Does the pedal go down gradually? If so I would be looking at the master cylinder as the culprit. Jon

ok old fashioned or dumb here i guess vacuum bleeder? cost a what does it do? how does it work? and nope the pedal goes straight down just as fast as you can push it and i do get air comin out the bleeders but then quits then i try it and still pedal to the floor. now if it was the gas and i was racin that would be no problem but since it is the brake and im sittin still then that is a problem i do put it in drive and the brakes stop the car but you can tell it isnt doin well enough to get out and drive.

I'm not quite sure myself what a vaccum bleeder is, but I think it helped me a lot when my friend used it on my car (I wasn't around.) Try your local parts store and see what they have. I don't think they're very expensive.