Bleeding brakes

Need some help with bleeding my brakes. I just replaced the front brake lines to stainless steel from wheelers offroad. When installing I had an issue with the hard line at the caliper. I had to order a new hard line. In the process the master cylinder emptied out. I filled it up, but can't get any flow out of the bleeder valves. When I crack any of them, fluid will come out as a trickle. My question is due I need to reveled the master cylinder before any fluid will flow through the lines. Do I have aton of air in the lines. When I get my son to push the pedal and then on the 3rd press I crack the bleeder, nothing happens. The master cylinder was replaced by toyota less than a year ago. The brake pedal gets stiff after we try this and when I turn the truck on the pedal will then go to the floor. So I think the booster is OK. I can keep pushing the brake pedal but it never stiffens up. The other thing is when we try repeating the process with pushing the brake and cracking the bleeder, brake fluid will start to leak from the bottom of the booster and down the frame. What do I need to try to fix this. 2007 tacoma thank you

 

Did you use a pressure bleeder

 

what trim package?
i.e ORs ABS system needs to be cycled with ether Tech Stream or high level diagnostic box to bleed the air out of it

 

Sounds like the master cylinder is leaking

 

Sr5 prerunner, the master cylinder was replaced by toyota less than a year ago. The brake lime that I had a problem with the fitting was the passenger front that goes directly to the abs system. I keep getting brake flyud running down the frame where the master meets brake booster. I don't know if it's coming when I cracked the lines when I bleed the master cylinder. The brake system was fine until I had to screw around with new brake lines. Now I'm having to bs my wife instead of telling her the truth that none of this needed to happen. Would air in the abs unit cause no pressure at all 4 wheels.

 

Sounds like something is leaking. Don't worry about air in the lines right now