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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Ignition (H4DOTC)) >> Spark Plug >> Adjustment

Spark Plug: Adjustment

WARNING: This page is about a different variant/trim than selected.

Clean the spark plugs using a wire brush.

Clean and remove the carbon or oxide deposits.

But do not wear away ceramic insulator.

If deposits are too stubborn, replace the plugs.

NOTE: Do not use a plug cleaner because the spark plugs are applied with iridium tip.

Spark plug gap: L 

0.7 - 0.8 mm (0.028 - 0.031 in) 

Fig 1: Identifying Spark Plug Gap
G03829921Courtesy of SUBARU OF AMERICA, INC.