Thump/whine/knock noise from the midship fuel tank at idle or during key on, engine off (KOEO) after...

Bulletin number

SSM 52765

Component

Fuel/propulsion system

Summary

Some 2020-2022 F-Super Duty pickup vehicles equipped with a 6.7L engine, 175 inch wheelbase, and built on or before 23-Sep-2021 may exhibit a thump/whine/knock noise from the midship fuel tank at idle or during key on, engine off (KOEO) after performing TSB 21-2057. The noise may be more pronounced at fuel levels at or below 1/4 tank. This may be due to the fuel pump

Owners of these vehicles have filed 268 complaints in the fuel system category.