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Home >> Subaru >> 2003 >> Impreza Outback Sport, Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - SOHC >> Spark Plug >> Adjustment

Spark Plug: Adjustment

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

  1. Spark plug gap: L  1.0 - 1.1 mm (0.039 - 0.043 in)
Fig 1: Measuring Spark Plug Gap (L) With Gap Gauge
G02621830Courtesy of SUBARU OF AMERICA, INC.
NOTE: Replace with a new spark plug if area (A) is worn to a rounded shape
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