Park your car on a flat surface, turn off the engine, and engage the parking brake to ensure safety during the procedure.
Open the hood and locate the spark plugs, usually found along the engine cylinder head, covered by ignition coils or wires.
Disconnect the negative terminal of the battery to prevent electrical shorts or shocks while working.
Remove any engine covers or components obstructing access to the spark plugs, using a screwdriver if needed.
Carefully disconnect the spark plug wires or ignition coils from each spark plug, noting their positions for reassembly.
Attach the socket wrench with a spark plug socket and extension bar to the old spark plug, then turn counterclockwise to remove it.
Check the gap on each new spark plug with a gap tool, adjusting if necessary to match the vehicle's specifications.
Apply a small amount of dielectric grease inside the spark plug boots to facilitate future removal and prevent moisture buildup.
Thread the new spark plugs into the engine by hand to avoid cross-threading, then tighten with a torque wrench to manufacturer specifications.
Reconnect the spark plug wires or ignition coils to each new spark plug, ensuring they are seated firmly.
Reinstall any engine covers or components removed earlier, securing them properly.
Reconnect the negative terminal of the battery, ensuring a tight and secure connection.
Start the engine and listen for smooth operation, checking for any misfires or irregularities.
