I jacked the car up on all fours and bled almost two more quarts of Castrol LMA Dot4 brake fluid through the lines but still no brakes. I bled a pint out of the left rear and 3/4 of a pint from the right rear. I taped the calipers with a mallet as I opened each bleed screw. I tapped the distribution block and the rear proportioning valves. I did get some air out but not much at all on any of the calipers. I doubt there could be air in the lines and I should have some pedal at this point, so I think the problem is elsewhere in the system.

I'm going to unbolt the master cylinder again just to make sure it's lined up with the brake booster properly. After that I'm out of ideas. I'm going to talk to the Volvo mechanics at the shop that I use for some repairs to see what they think it could be. I had to rent a car for the wife to drive for a few days until I can talk to the guru's at the Volvo shop. If I can't get it fixed after talking to them, then it will be tow truck time.

I don't know what they would have charged me to do this work, but it's starting to get expensive. I've followed all the proper procedures and still no brakes.
I could flush fluid through the system all day long and still not get a firm pedal. This is really a mystery to me as I've never had this much trouble bleeding brakes.

Any further ideas before I shoot the car (or my wife shoots me!)?

Thanks...!

DeWayne