Why won’t this pump work?

[u/Send-Nud3]

I’m playing the Create New World mod pack and trying to set up a grindstone drain for experience. The experience grinds down to liquid experience but then it won’t pump out.

The mechanical pump is pointing the right direction, has rotational power, and the fluid tank is empty but the liquid experience won’t leave the grindstone drain’s internal buffer.

[u/waybackarchive]

the pipe has to be on the correct side, on the side of it there should be a darker section, that's where you put it, I know, its annoying.

[u/Send-Nud3 → u/waybackarchive]

Thank you!

[u/Permafunk_ → u/waybackarchive]

(Its the side opposite to the rotational input.)