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Looks like a vent hose but it seems to be connected at one end on the rail-mounted fuel pump. The other end may have connected to something above/around the drive shaft but is now just dangling down. Where does it go?
What I thought was a “fuel pump” is actually looking more like a “fume canister”. It’s mounted on the inside face of the vehicle frame below the driver’s door. I assume the canister contains some media that’s supposed to temporarily absorb fumes from the gas-tank (during filling or off-gassing) but then offers those vapors to the engine air-intake for combustion when the engine is running. Since the gas-tank would need to be vented to allow fresh air in as gasoline is consumed (or risk implosion), this hose-thing could be an inlet or an outlet (or both)? I just need to know where the heck the one end became detached from. The vent-end with the funky grommet looks like it could be twist-fit into any number of holes in the body/undercarriage but the pre-formed/bent plastic hose apparently had a destination in mind. A destination I can’t see, feel or find. It’s weird.
Thanks for the suggestion. My 2020 F-150 is (I suspect) rather unusual in its basic-ness. It was the least expensive 4x4 I could find with an 8’ cargo bed. It’s got the 3.5 L V6 with no rear seating. I think it’s the “XL” model which is as basic as it gets. Painted black bumpers, white paint, no carpet interior and silver-painted steel wheels with hub caps.
Looking more closely at the end of the tubing that goes into the underside of the transmission “tunnel”, I see what look to be “chew” marks. Perhaps a mouse or chipmunk was trying to gain access to the vehicle interior from the underside and pulled this end of the vent-tube out?
What is this?
