Spark Plugs: Removal

WARNING: This page is about a different car, the 2019 Ford F-350 Super Duty and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

For information on Ford Color Coded Illustrations refer toOEM Color Coding

Upper spark plugs

Remove the ignition coil-on-plugs. Refer to: Ignition Coil-On-Plug .
Lower spark plugs
NOTE: Use compressed air to remove any foreign material from the spark plug wires and surrounding area before removing the spark plug wires.

NOTE: When removing the spark plug wires from the spark plugs, a slight twisting motion will break the seal and ease removal.
- Disconnect the left lower spark plug wires.
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NOTE: Use compressed air to remove any foreign material from the spark plug wires and surrounding area before removing the spark plug wires.

NOTE: When removing the spark plug wires from the spark plugs, a slight twisting motion will break the seal and ease removal.
- Disconnect the right lower spark plug wires.
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All spark plugs
NOTE: Do not remove the spark plugs when the engine is hot or cold soaked. Spark plug thread or cylinder head damage can occur. Make sure that the engine is warm (hand touch after cooling down) prior to spark plug removal.

NOTE: If a spark plug is dropped, internal damage may result and the spark plug must be discarded. The use of a damaged spark plug may cause cylinder misfire resulting in engine damage.

NOTE: Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.

Remove the spark plugs.

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Inspect the spark plugs. Refer to: Spark Plug Inspection .