Grand Marquis V8-4.6L Flex Fuel (2010)
Spark Plug: Service and Repair
Spark Plugs
Spark Plugs
Removal and Installation
1. Remove the ignition coil-on-plugs. For additional information, refer to Ignition Coil-On-Plug See: Ignition Coil/Service and Repair/Ignition
Coil-On-Plug.
2. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.
NOTE: Use compressed air to remove any foreign material from the spark plug well before removing the spark plugs.
Remove the spark plugs.
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To install, tighten to 18 Nm (159 lb-in).
3. Inspect the spark plugs. For additional information, refer to Engine.
4. To install, reverse the removal procedure.
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Adjust the spark plug gap on gasoline engines to 1.32-1.42 mm (0.052-0.056 in).
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Adjust the spark plug gap on flexible fuel engines to 1.04-1.19 mm (0.041-0.047 in).