1990 camaro tbi
rs

The bleeder valves to the rear drum brakes are screwed in all the way and theres no room to get a wrench on it.

It looks like only a socket willl turn it out, but if i do that... how do i bleed it?

Do i just loosen it up with a socket and then quickly put the tube over it to make it drain into the pan?

The front brakes look easy, but these drum brake valves are screwed in so far, theres no way to get a wrench on it.

 

Alright I figured out how to access the bleeder valves, however after doing the bleeding to all 4 brakes, it was strong, then i started my engine and bam it all went back.

I think it's because I did not bleed the Master Cylinder.

So now that I have to do this procedure again, I would like some recommendation

Should I take the bleeder valves out and let it sit over night??
Is that how you gravity bleed them??

Also,

Am I able to pull my master cylinder off and bench bleed it,
will I then still have to bleed all 4 valves again after I install the master cylinder?

 

Yes, remove MC and bench bleed.
Yes, rebleed the system starting with the longest line first.

One can make a plate for the reservoir and with a fitting can put a hand vacuum pump on the fitting/plate and put a vacuum on reservoir.
This will create a low pressure on reservoir and any air in lines/cylinders is at a higher pressure.
Physics involved as high pressure volume will try to equalize the lower pressure volume.
Making plate from 1/4 inch Plexiglass will allow you to see bubbles emerge while vacuum is applied.

 

Get a bleeder vacuum kit and bleed from the farthest away bleeder first. Make sure you dont run the master cylinder dry.




If you dont want to spend the 20 bucks most parts stores will loan you it for free.