Fuel hose size from water trap

[MrCrunch]

Does anyone know why the fuel outlet from the water trap is smaller than the inlet? I get why the return hose to tank is smaller, but seems pretty small for a feed hose.

 

[papakb]

1/4" vacuum line. It's thinner than fuel line. Get a piece long enough to reach down to the bottom of the footwell and secure it with electrical "P" clips. That way when you bleed the filter it won't piss diesel all over the panel.

 

[MrCrunch]

Oh I meant the fuel outlet to engine. It seems pretty small to be the main feed for the engine.