2005 Hyundai Tucson Owner's Manual - Page 216

6 DO-IT-YOURSELFMAINTENANCE 10 SPARK PLUGS G060B01JM-AAT Replacing the Spark Plugs The spark plugs should be changed at the intervals specified in the vehicle maintenance schedule in Section 5 or whenever engine performance indicates they should be changed. Symptoms that suggest poor spark plug performance include engine misfiring under load, loss of fuel economy, poor acceleration, etc. When spark plugs are replaced, always use spark plugs recommended by Hyundai. The use of other spark plugs can result in loss of performance, radio interference or engine damage. Recommended Spark Plugs: REMARK 2.7 IFR5G-11 (NGK) (Iridium Coated) 2.0L (Platinum Coated) PFR5N-11(NGK) RC10YPB4 (CHAMPION) TYPE G060C01JM-AAT Changing the Spark Plugs NOTE: o When replacing the spark plug, genuine Hyundai replacement parts are recommended. o It is recommended that the spark plug should be changed by an authorized Hyundai dealer. (2.7 L) o Do not clean or regap spark plugs. G060C01JM You will find it easier to change spark plugs if the engine is cold. Always change one spark plug at a time. This helps avoid getting the wires mixed up. 1. Remove the center cover (2.0L) on the engine rocker cover. 2. Using a clean cloth, remove any dirt that has accumulated around the base of the spark plug so it cannot fall into the cylinder when the spark plug is removed. 3. To remove the spark plug cable, pull straight up on the insulated connector, not the cable. Pulling on the cable may damage the carbon core conductor.