Problem with pumping water

[Nimir]

Hello. Just got back to playing minecraft with my friends and I have a small problem with the pump from buildcraft.

When I last played minecraft ( around 4 months ago ) with buildcraft I just placed four redstone engines against the pump and it pumped water forever with no problems.

But now the redstone engines work until they are red and then stops after a while of being red.

Only way to get them to work again is to remove them and replace them. So I tried using a steam engine ( the one from thermal expansion ) because I have them running on the quarry with out any problems. But same problem as the redstone engines it just stops after a while. Now is this some new thing in buildcraft? Should I power the pump with some other engines?

I have looked around but I have failed to find anything.