Feedback Monitoring System (Triumph Models Only)
- Start and run engine until normal operating temperature is obtained. If engine is already hot, run engine for 2 minutes before testing. Connect feedback monitor (60973066) to diagnostic connector in harness near ECU. Place feedback monitor switch in "LOW" position. See Fig 1.
- Mixture is correct when either No. 2 or No. 3 lights in either row glows. Any other light combination, except No. 1 or No. 4 lights in either row, is acceptable.
- If both No. 3 lights glow, remove mixture screw plug and adjust mixture until No. 2 and No. 3 lights in either row glow. Turning mixture screw clockwise richens mixture, counterclockwise leans mixture.
- After setting mixture, remove vacuum pipe from fuel pressure regulator with feedback monitor still connected. Lights should move to left, indicating richer mixture (for example, from No. 2 to No. 1). If lights do not shift, check wiring circuit and/or replace oxygen sensor.
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