Spark Plug: Adjustment

WARNING: This page is about a different car, the 2003 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

Measure the spark plug gap with a gap gauge, and adjust if necessary.

Spark plug gap: L 1.0 - 1.1 mm (0.039 - 0.043 in)

Fig 1: Measuring Spark Plug Gap (L) With Gap Gauge

Courtesy of SUBARU OF AMERICA, INC.

NOTE: Replace with a new spark plug if area (A) is worn to a rounded shape