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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Mechanical System (VIN L)) >> Engine Tune-Up >> Idle Mixture Inspection

Idle Mixture Inspection

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the idle speed and ignition timing are within the specification. (See Idle Speed Inspection .) (See Ignition Timing Inspection .)
  2. Insert an exhaust gas analyzer into the tailpipe.
  3. Verify that the CO and HC concentrations are within regulation.
    • If there is a malfunction, refer to "ENGINE SYMPTOM TROUBLESHOOTING".
      • If no malfunction is detected, replace the catalytic converter. (See EXHAUST SYSTEM REMOVAL/INSTALLATION .)

        CO concentration 

        Within the regulation

        HC concentration 

        Within the regulation