2003 Honda Accord Owner's Manual - Page 295

Spark Plugs (4-cylinder Models), Spark Plugs (6-cylinder Models) Specifications: IZFR6K-11 NGK: DENSO: SKJ20DR-M11 On some models Tighten the spark plugs caref ully. A spark plug that is too loose can overheat and damage the engine. Overtightening can cause damage to the threads in the cylinder head. 9. Install the ignition coil into the hole. 10.Connect the wire connector to the ignition coil. Make sure it locks in place. 11.Push the ignition coil down all the way. Install the bolt. 12.Repeat this procedure for the other three spark plugs. 13.Reinstall the coil cover, and tighten the four nuts. NGK: DENSO: IZFR6K-13 SKJ20DR-M13 Spark Plugs (6-cylinder Models) The spark plugs in your car are a special iridium-tipped design for longer life. The spark plugs should be replaced according to the distance recommendation in the maintenance schedule. CONTINUED Maintenance 291