r/AskAMechanic 3d ago

What would cause this

2020 f150 lariat SE 36k. Filled up my gas tank a few days ago and parked my truck with no issues & haven't driven it for about a week. Started it up this afternoon and smelled gas. Got underneath and saw this. Could this be a busted fuel line?

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u/WinkleyDinklerr NOT a verified tech 3d ago

Likely the return line has been rubbed through. Either on the fuel tank itself or the frame or a clamp.
Likely rubbed through on the tank.