Spark Plugs Spark Plug Replacement: Replace old or worn-out spark plugs to ensure optimal engine performance. Spark Plug Inspection Check the condition of spark plugs for wear, fouling, or damage. Spark Plug Gap Adjustment Adjust the gap between the electrodes for proper ignition and performance. High-Performance Spark Plug Installation Install high-performance spark plugs for enhanced engine power and efficiency. Ignition System Check Inspect the entire ignition system, including spark plugs, to diagnose and fix any issues. Spark Plug Wire Replacement Replace faulty or damaged spark plug wires to prevent misfires and improve engine performance. Engine Misfire Diagnosis Diagnose and fix engine misfires caused by faulty or worn-out spark plugs.