Air Gap Inspection

Verify that the CKP sensor is securely installed.
Using a thickness gauge, measure the air gap between the plate projections at the back of crankshaft pulley and the CKP sensor.
- If not within the specification, inspect the plate projections for cracks or bending.
  - If not within the specification, replace the crankshaft pully. (See FRONT OIL SEAL REPLACEMENT .)
Air gap 0.5-1.5 mm {0.02-0.05 in}

Fig 1: Identifying Air Gap Between Projection And CKP Sensor
Courtesy of MAZDA MOTORS CORP.