Please complete the following information:

• Forge Version: 14.23.5.2854
• BuildCraft Version (Add Hash if from github): 7.99.24.6
• Any additonal mods: IC2 (1.8.203-ex112), Galacticcraft (4.0.2.280), JEI (4.15.0.268)
• Running on MC Forge server 1.12.2 (Forger version same as above specified)

To Reproduce
Steps to reproduce the behavior:

1. Place pump above infinite water source
2. Place floodgate at desired location
3. Connect floodgate with fliud pipes (issue occures with both stone and gold fluid pipes)
4. Power pump with 4 redstone engines (clogging seems to occur when the water output of the pump is greater then water input of floodgate).
5. Leave the area alone for some time
6. Return to the affected area to see, that the floodgate has stopped placing water blocks and fluid pipes are full.

Notes:

• Interestingly, if you then destroy a water source block in the area already filled by the floodgate it will be replaced instantly, however no new areas are filled (the radius of the filled area will not grow).
• Current solution: break and replace all fluid pipes and floodgate and power pump with only 1 redstone engine.
• Issue also recreatable with cool residue.

I confirm, same issues. Floodgate doesnt fill the entire place.

Got an image for you guys too (the water in the pipes appears to be stationary):