Some 2021-2022 F-150 vehicles equipped with a 3.5L EcoBoost engine may exhibit engine misfire concerns...

Bulletin number

SSM 50412

Component

Engine

Summary

Some 2021-2022 F-150 vehicles equipped with a 3.5L EcoBoost engine may exhibit engine misfire concerns with or without DTCs. If diagnostics lead to ignition coil replacement, swap the ignition coil(s) between the misfired cylinder and a known good cylinder. Only replace the ignition coil if the misfire concern follows that particular ignition coil. If the misfire condition does not follow the coil, apply dielectric grease to the boot, reinstall the ignition coil in the original cylinder and continue normal diagnostics in Workshop Manual (WSM), Section 303-07C.

Owners of these vehicles have filed 143 complaints in the engine category.