Tailpipe Emission Inspection

TAILPIPE EMISSION INSPECTION
NOTE: Do not use a CO meter to adjust the idle mixture; the effect of the catalytic converter prevents accurate tracking of such small changes in air/fuel ratio.

WARNING: Do not smoke during this procedure. Keep any open flame away from your work area.

1 Follow steps 1 through 5 of the propane enrichment method
2. Warm up and calibrate the CO meter according to the meter manufacturer's instructions.
3. Check idle CO with the headlights, heater blower, rear window defroster, cooling fan, and air conditioner off.

CO meter should indicate: 0.1% CO maximum