So, I hav a water separator on my mud motor and also on my inboard 20 footer. I was just looking on the Moeler WS website and noticed that it says " Not recommended for use with electric fuel pumps" . Dag Nabbit. Thats exactly the combination I have on my mud boat. I recently installed the electric fuel pump, ran it in the driveway and all seemed fine. (Idled) So, do any of you guys have experience of having an electric fuel pump and a water separator? What goes wrong? Thanks. " It's ALWAYS something".