Check At O2 Sensor: Notes
Remove O2 sensor. Install back pressure tester in place of O2 sensor as shown in illustration. After test is completed, ensure O2 sensor threads are coated with anti-seize compound before installing.
Remove O2 sensor. Install back pressure tester in place of O2 sensor as shown in illustration. After test is completed, ensure O2 sensor threads are coated with anti-seize compound before installing.