2005 Dodge Dakota - Brake bleed suggestions

bled brakes no leaks new master cylinder and rear brakes. fluid comes out on 1st pump but not on 2nd or 3rd. when driving truck brakes some time stay up but often go to floor and then brake. What can I do?

Bench bleed the master cylinder and bleed brakes. The ABS may also need to be bled with an appropriate scan tool.