Diagnostic procedure

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Symptom No.30 Spark Plug Condition - Diagnostic Procedure Chart (Steps 1-4)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Symptom No.30 Spark Plug Condition - Diagnostic Procedure Chart (Steps 5-15)

Courtesy of MAZDA MOTORS CORP.

Fig 3: Symptom No.30 Spark Plug Condition - Diagnostic Procedure Chart (Steps 16-17)

Courtesy of MAZDA MOTORS CORP.