I was surprised to find yesterday that the fuel pump on my 2008 plus 4 has 2 connections. one white (connected to the output side of the fuel filter) and one red (connected to a tee piece and then to the input side of the filter and a pipe running towards the front of the car). Thinking about this the white one looks like the fuel output and the red one some kind of built in pressure relief valve. If this is true then my fuel filter is connected backwards on the other hand if the red one is the output then the fuel filter must be connected in a bypass mode which doesn't seem right.
Does anyone know what the ports on the pump are?
