To clean spark plugs, disconnect the cables, remove the spark plugs, scrub them with sandpaper and a wire brush, wipe them with solvent, reinsert them, and reattach the cables. This 45-minute process requires work gloves, a bench vise, sandpaper, a brush, a ratchet wrench, solvent and rags.
- Remove the spark plugs
Put on work gloves, open the vehicle hood, and disconnect the spark plug cables. Use a ratchet wrench to remove the spark plugs.
- Brush and sand the spark plugs
Place one spark plug in a bench vise. Scrub the spark plug with a wire brush and sandpaper until the plug is shiny and clean. Fold a piece of sandpaper in half, and use the edge to clean the electrode gap. Repeat with the other spark plugs.
- Apply solvent
Open the nearby windows. Moisten a rag with solvent, and wipe the spark plugs. Work the solvent over the plugs until they are free of oil and fuel residue, then dry them with a clean cloth. Leave the solvent-soaked rag in a well-ventilated area until the solvent evaporates.
- Reinsert and reattach the spark plugs
Reinsert the spark plugs, secure them with the ratchet wrench, and reconnect their cables. Close the vehicle hood.