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01 02 03 S6M6A00A26100055901MAAT00 − − Electrode Gap 1.0 1.1 mm (0.039 0.043 in.) Service Limit: 1.3 mm (0.051 in.) Spark Plugs SKJ20DR-M11 (DENSO) K20A2 Engine: IFR7G11K (NGK) IFR7G11KS (NGK) K20Z1 Engine: IFR7G11KS (NGK) SK22PR-M11S (DENSO) Specified Torque 4-28 Ignition System Spark Plug Inspection • Improper gap electrode insulator Worn or deformed Damaged Cracked A A 1. Inspect the electrodes and ceramic insulator. • Burned or worn electrodes may be caused by: – Advanced ignition timing • Fouled plug may be caused by: – Retarded ignition timing 2. If the spark plug electrode is dirty or contaminated, clean the electrode with a plug cleaner. NOTE: • Do not use a wire brush or scrape the iridium electrode since this will damage the electrode. • Use a chemical cleaner such as Carb Spray to clean contamination on the electrode. • When using a sand blaster spark plug cleaner, do not clean for more than 20 seconds to avoid 3. Do not adjust the gap of iridium tip plugs (A); replace the spark plug if the gap is out of 4. Replace the plug at the specified interval, or if the center electrode is rounded (A). Use only the spark 5. Apply a small amount of anti-seize compound to the plug threads, and screw the plugs into the |