my Ford F-150 12th Generation (2009-2014) has excessive oil consumption, why?

Solution

1. Preparation

• Gather tools and parts.
• Park the vehicle on a level surface and allow the engine to cool.
• Disconnect the battery to ensure safety while working.

2. Address External Leaks

• Tools Required: Socket set, torque wrench, engine oil, rags
• Inspect and replace any worn gaskets or seals identified during the diagnostic step.
  • For valve cover gaskets, remove bolts, lift off the cover, clean the mating surfaces, and replace the gasket.
  • Reinstall and torque bolts to manufacturer specifications (typically around 7-10 ft-lbs).

3. Replace Faulty PCV System Components

• Tools Required: Pliers, replacement PCV valve, hose
• Remove the old PCV valve by pulling it out of its grommet.
• Replace with a new PCV valve ensuring it fits securely.
• Inspect and replace any damaged hoses connected to the PCV system.

4. Cylinder Head Inspection (if necessary)

• Tools Required: Torque wrench, engine oil, gasket set
• If internal engine wear is suspected, remove the cylinder head.
  • Disconnect all necessary components (inlet manifold, exhaust manifold, etc.).
  • Unbolt the cylinder head and lift it off carefully.
  • Inspect for wear on piston rings and cylinder walls; replace as necessary.
  • Install a new head gasket and torque to manufacturer specifications.

5. Oil Change and Monitor

• Tools Required: Oil filter wrench, oil catch pan, funnel
• Change the engine oil and replace the oil filter.
• Use the recommended oil grade (typically 5W-20 or as specified).
• Monitor oil levels after repair for any signs of continued consumption.