Plug Gap Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

To avoid possible damage to the tip, do not adjust the plug gap.
To prevent damaging the tip, use a wire type plug gap gauge when inspecting the plug gap.

Measure the spark plug gap using a wire type plug gap gauge.
- If not within the standard specification, replace the spark plug.
  Spark plug gap
  
  Standard: 1.05-1.40 mm {0.0414-0.0551 in}
  
  New spark plug (reference): 1.05-1.15 mm {0.0414-0.0452 in}