LS 460 V8-4.6L (1UR-FSE) (2007)
c. Check the spark plug for any damage to its threads and insulator.
If there is any damage, replace the spark plug. If not, reinstall the spark plug.
HINT: Maximum electrode gap for a used spark plug: 1.3 mm (0.051 in.)
If the gap is greater than the maximum, replace the spark plug.
Electrode gap for a new spark plug: 1.0 to 1.1 mm (0.039 to 0.043 in.)
NOTE: Never attempt to adjust the gap of a used plug. If the electrode has traces of wet carbon, allow it to dry and then clean it with a spark plug
cleaner.