Visual Inspection

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the following items:

Fig 1: Identifying Burns And Damage On Spark Plug
Courtesy of MAZDA MOTORS CORP.
- If any of the following malfunctions are indicated, replace the spark plug.
  - Insulator breakage
  - Worn electrode
  - Damaged gasket
  - Badly burned insulator (sparking side)