Decrease your gravity to zero and increase your bouyancy. Also check the viscosity of the fluid. Make sure it's set to zero. The fluid should come through even with a low res fuid container. Are you using a volume emitter? You should. One last thing I can think of; turn off all turbulence and discipation and dispersion..

One more thing. Maybe the fluid IS coming through but you have your opacity ramp set wrong. Let the sim run for a while then play around with the opacity ramp. The fluid might be coming through but it is so thin that it just isn't visible. Adjusting the opacity ramp could make it visible again. You might want to turn up the density scale. I think it's default is .5 . Try turning it up to 1 or higher.

One more thing. You could turn the heat up on your fluid emitter(s) then turn the bouyancy for the temperature up also. Let us know how it turns out.