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Home >> Lincoln >> 2012 >> MKZ Base, FWD >> Repair and Diagnosis >> Engine Performance >> Engine Ignition System - 3.5L >> Removal And Installation >> Ignition Coil-On-Plug >> Removal and Installation

Removal and Installation

LH side 

  1. Disconnect the crankcase ventilation tube-to-valve cover quick connect coupling and position aside. For additional information, refer to FUEL SYSTEM - GENERAL INFORMATION .

    RH side 

  2. NOTE: The upper intake manifold must be removed to access the RH ignition coil-on-plugs.
  3. Remove the upper intake manifold. For additional information, refer to ENGINE - 3.5L .

    Both sides 

  4. Disconnect the 6 ignition coil-on-plug electrical connectors.
  5. NOTE: When removing the ignition coil-on-plugs, a slight twisting motion will break the seal and ease removal.
  6. Remove the 6 bolts and the 6 ignition coil-on-plugs.
    • To install, tighten to 7 Nm (62 lb-in).
  7. Inspect the coil seals for rips, nicks or tears. Remove and discard any damaged coil seals.
    • To install, slide the new coil seal onto the coil until it is fully seated at the top of the coil.
      Fig 1: View Of Coil Seal Location
      G06064181Courtesy of FORD MOTOR CO.
  8. To install, reverse the removal procedure.
    • Apply a small amount of dielectric grease to the inside of the ignition coil-on-plug boots before attaching to the spark plugs.