Talk:Pump (BC)/@comment-5537760-20121028150442/@comment-5477397-20121028224418

They're not unreliable, you're just not giving them enough power. They need 10 MJ/t to run at full capacity, and redstone engines give 0.01MJ/t. I'll assume that you've left them going for a while, and they're running at the orange stage, therefore they'll be producing 0.04MJ/t each.

You've got 4 of them, that means you're giving them a total of 0.16MJ/t. The two pumps need 20MJ/t together, so you're giving them 0.8% of the energy they need to run at full capacity.

Add another 496 redstone engines, or use more efficient ones.