I installed a carter electric fuel pump (P4600) in the location of the factory vacuum pumps. Out of water works fine. However, in the water there is no pressure at all. It seems that the pump is too far from the tank. At this point I am trying to identify an electric fuel pump that can perform in the location of the factory pumps. Any suggestion will be appreciated. I am considering the Holey marine pump 712-801-1 (summit).