October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Check at O2 Sensor

Remove O2 sensor. Install back pressure tester in place of O2 sensor. See Fig 1 . After test is completed, ensure that O2 sensor threads are coated with anti seize compound before installation.

Fig 1: Installing Backpressure Tester