Those plastic, see-through fuel filters - are they happiest on their sides or vertical? If vertical then flowing downwards or upwards? Or does it make no difference at all?
I'm changing a carb/inlet set up so I have a blank canvas. The current set up isn't running right and it's just possible that the electric fuel pump isn't quite keeping up, so I want to give it any help I can give it through the orientation of the fuel filter.