Sonata V6-2.7L (2004)
Spark Plug: Testing and Inspection
INSPECT SPARK PLUG AND SPARK PLUG CABLE
1. Remove the spark plug cable.
NOTE: When removing the spark plug cable, pull on the spark plug cable boot (not the cable), as it may be damaged.
2. Using a spark plug socket, remove the spark plug.
CAUTION: Be careful that no contaminates enter through the spark plug holes.
3. Inspect the electrodes(A) and ceramic insulator(B).
4. Check the electrode gap(A).
Standard (New): 1.0-1.1 mm (0.039-0.043 in.)