Some 2017-2018 F-150 vehicles equipped with a 2.7L EcoBoost engine may exhibit white or grey smoke/vapor from the exhaust after cold start and/or black soot accumulation on the exhaust tailpipe. Some smoke during cold start is normal for EcoBoost engines due to their unique fueling characteristics. If the vehicle exhibits smoke after the engine is at normal operating temperature refer to the appropriate section of the Workshop Manual (WSM) and/or Powertrain Control Emissions Diagnosis (PC/ED) Manual for diagnostics. Refer to GSB G0000185 Various Vehicles Equipped With Turbocharged V6 Engines - Turbocharger Oil/Coolant Leaks before replacing gasoline engine turbochargers.
