Lincoln Aviator: Engine / Engine - 3.0L EcoBoost

General Procedures - Valve Stem Diameter

Check NOTE: Refer to the appropriate Section 303-01 for the specification. Measure the diameter of each intake and exhaust valve stem at the points shown...

Specifications

  Engine Item Specification Displacement 2.956L (4V) (164 CID) No. of cylinders 6 Bore/stroke 85...

Other information:

Lincoln Aviator 2020-2026 Service Manual: Description and Operation - Gasoline and Gasoline-Ethanol Fuel Systems Health and Safety Precautions

  WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running...

Lincoln Aviator 2020-2026 Owners Manual: Changing the Engine Air Filter

WARNING: To reduce the risk of vehicle damage and personal burn injuries, do not start your engine with the air cleaner removed and do not remove it while the engine is running. When changing the engine air filter, do not allow debris or foreign material to enter the air induction system...