HMM no, the front brakes are on the same circuit that sounds like a hose problem but I'm not there to verify that issue.

 

Back in my younger days I use to manage an automotive shop. I am not an expert in brakes but I do know a little about brakes but not master cylinders. We did mostly tune-ups and minor repairs. This was in the late 80s

 

Brake pedal was weak to begin with? Then yes the MC could have been the problem all along.

 

I have never changed a MC before. Should I try it or take it to a shop?

 

wow, I was thinking you were a lot younger.

 

I wish hahahahaaha Im just a retired ole fart tring to survive. Thats is why I did the brakes myself. I could not afford to go to a shop. Could you tell me how much a shop would charge me to replace the MC

 

You can do this with a person to help. Use line wrenches to loosen up the two lines, may need to remove or unmount the RWAL unit. After you disconnect the brake lines the remove the two nuts that hold the cylinder to the booster. Now pull the old MC out. Install the new MC to the booster, but do not hook up the lines yet. Pour fresh fluid into the MC. Have a helper gently push the MC while you use your thumbs to firmly cover the ports for the brake lines. By keeping your thumbs firmly over the holes allows your helper to push out the air and draw in fluid when he/she releases the pedal. Have them do this slowly both pressing and letting up on the pedal. About 5 seconds between start to finish when pressing or letting up is good.

Once you have no more air then hook up the brake lines. A trick I have done many times now is to just loosen the line a little bit and have your helper to start to push the pedal as you finish tightening the line. So far out of 7 I have done I have not even needed to bleed the rest of the system.

 

why don't you just do it yourself. seems like you already have the skills and knowledge.

You should also get yourself a mityvac for this job.


you need to bench bleed the master in a level position. a vise is really handy for this. a new master comes with instructions

but before condeming the master. why not fill the master, open all the "bleeder valve/nut or what ever you call it" for a couple hours and let gravity do the work. tighten and try power bleeding again.

 

Well since I live in an apartment complex and don't have a vise and I cant afford a mityvac since I am on a limit budget and only get a retirement check I guess I will have to save up the money and go to a shop.

 

Wow, that sounds like some poor life planning. Hope you teach your children/grand children the importance of an education, saving, defering gratification and how to plan financially.