One man brake bleeder help needed

[shadango]

I bought a one man brake bleeder kit (the kind you hook up to an air line) at Harbor Freight....but I found that it only comes with the refill bottle couplers that work on master cylinders that have round individual caps....I just turned the largest adapter upside down and the bottle stands in the reservoir so the bottle keeps the reservoir filled....just have to be careful....

I removed the master cylinder cover and found that the front tank (rear brakes) section was really low and the rear is pretty much EMPTY!   I went over the rear brakes (pulled the drums) and looked at backing plate of the front brakes (didnt pull the drums yet) and didnt see any leaks....

So I hooked up the bleeder kit.....Thing is, even after opening teh bleeder all the way, I get minimal flow from the right rear.....the fluid level does drop though in the reservoir.....I just cant figure out where the fluid os going...

Could I have that much air in the lines?  After using the bleeder on that right rear, I found I had no pedal....pumped a bunch and then it came back fine, and I found that the master cylinder fluid in the front tank was all dirty again.....could it just be that I have crud in the system and it will take a while?

I have bled many car brakes and bike brakes before......just not having much luck on my fish....

I bought the power bleeder so I could do it myself and quickly.....but so far not getting very far it seems.

[Chryco Psycho]

if all the fittings are not cinched tight you could be getting air into the lines or rust holes as well , the fluid to the rear is limited through the proportioning valve so flow may not be much , if it is dirty I would pump it through until you get clean fluid

[shadango]

I went over the rear lines again and they look fine....no leaks....

The fluid is going "somewhere"....just not a steady flow out of the bleeder.......

Dont seem to have a proportioning valve....just the brake warning switch block......I have drums all around.