Spark Plugs: Installation

Both sides 

1. Inspect the 6 spark plugs.

   Item	Part Number	Description
   1	-	Deposits bridging spark plug gap
   2	-	Wet black deposits (oil fouling)
   3	-	Dry black deposits (carbon fouling)
   4	-	Normal spark plug
   5	-	Pre-ignition
   6	-	Overheating
   7	-	Fused spot deposits

Fig 1: Identifying Spark Plugs Condition
Courtesy of FORD MOTOR CO.
2. Adjust the spark plug gap as necessary.
Fig 2: Adjusting Spark Plug Gap
Courtesy of FORD MOTOR CO.
CAUTION: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.
3. Install the 6 spark plugs.
   • Tighten to 15 Nm (11 lb-ft).
NOTE: Apply a small amount of dielectric grease to the inside of the ignition coil-on-plug boots before attaching to the spark plugs.
4. Install the 6 ignition coil-on-plugs and the 6 bolts.
   • Tighten to 7 Nm (62 lb-in).
5. Connect the 6 ignition coil-on-plug electrical connectors.

RH side 

6. Install the upper intake manifold. For additional information, refer to ENGINE - 3.5L .

LH side 

7. Position and connect the crankcase vent tube quick connect coupling to the valve cover fitting. For additional information, refer to FUEL SYSTEM - GENERAL INFORMATION .