Replacement of the Spark Plugs and Wires

wv mm 01.04.000

Important: When replacing spark plugs and wires, remove and replace one plug and wire at a time. This will eliminate the possibility of incorrectly installing the wires and having a misfire issue.

  1. Hold both ends of the spark plug wire, and gently pull one end of the wire off at a time.

    2. Note: Do not discard the insulation shields. The shields will be needed for the new wires.

  2. Use a spark plug socket, a 3-inch extension, and ratchet to remove the spark plug.
  3. Install the new spark plug(s) and tighten just until snug.
  4. Take a new spark plug wire and put the insulation shield at the plug-end of the wire.
  5. Put a small amount of dielectric grease on each end of the spark plug wire electrode, then install the wire.
  6. Repeat the above steps for the remaining spark plugs and wires.
  7. Install the engine access cover and lock the four latches.
Note:
Parent topic: Spark Plugs and Wires Inspecting and Replacing—Gasoline, Propane and CNG Engines
Document Number: 0000116487
Manual Publication Date: 2024-05-14
Topic Publication Date: 2024-11-19