Method A

Attach timing light to loop wire (1) as shown in illustration.
- <=: Vehicle front
  
  Fig 1: Identifying Loop Wire
  Courtesy of NISSAN MOTOR CO., U.S.A.
Check ignition timing.
- Timing indicator (1)
  
  Fig 2: Checking Ignition Timing
  Courtesy of NISSAN MOTOR CO., U.S.A.