Sorry you are having such difficulties with the pump.
BTW I am Fadal.
Makes no sense, the pumps a no brainer.
I'm wondering if your piston is stuck.
I'm sorry to ask but just to be clear, with the machine in the off condition, both waylube lines out of the Y fitting,you depress the white button in the center of the solenoid, no waylube at all comes out of the Y fitting ?
One more thing, the filter strainer mounted on the pump, is it full of waylube ?