Examination
Do not smoke while performing this procedure. Keep open flames away from your work area.
1. Attach the tachometer.
2. Start the engine. Leave at 3000 rpm without load (A/T in [N] or [P], M/T in neutral) until the radiator fan comes on, then leave it at idle speed.
3. Check idle speed and adjust if necessary
4. Warm up and calibrate the CO meter according to the meter manufacturer's instructions.
5. Check the idle speed with the headlights, heater fan, rear window defogger, cooler fan and air conditioner off*
CO concentration,%:
- For cars with neutralizer: 0.1%
- For cars without neutralizer: 1.0±1.0%
If these readings are not obtained:
On vehicles without a converter, adjust the mixture quality by turning the idle mixture adjustment screw (IMA).
If the specified CO readings are not achieved by performing this procedure, check the engine tuning status.