Nissan Pathfinder Brake problem

Tech857 said

Maybe loose front wheel bearings pushing pads way back. Have seen wheel cylinders suck air in through the seals. Stuck caliper guide pins can give a low pedal. Pressure bleeding and properly bleeding the abs with a scan tool can make a big difference. I doubt it is the height valve as it really only limits pressure.

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Interesting.

Now I've dealt with brakes that had air in the lines. This feels different.

It is literally like there is NO brake fluid in the lines on the first pump (goes to the floor with no pressure) and then on the second the brakes work perfectly with full pressure.

There is no leaking of fluid and no air in the brake lines. They have been bled a lot. They were pressure bled.