need help locating fuel leak at tank

[Polaraco]

I'm not a mechanic, but I would suggest looking at the top of the tank through the wheel well. On my '06 I can see the top of the lift pump that way. You should have sight of both the return and the suction quick disconnects. If they are leaking, while the truck is running, it should be noticable or the top of the pump would be wet with fuel. There are two roll over vents on top of the tank, one front and one rear. I had a leak once, but found it was the front vent seal had gone bad and when I replaced both vent seals, it stopped. If this is a stock set up, I can't think of any other way it would leak outside of a hole in the tank (pray not) or a leak from one of the fuel lines. Maybe someone else can chime in.

Good answer.

The fill tube could leak at the rubber coupler when the tank is filled to the top too.

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