Idle Mixture Inspection
WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
- Perform ENGINE TUNE-UP PREPARATION .
- Verify that the idle speed and ignition timing are within the specification.
- Insert an exhaust gas analyzer to the tailpipe.
- Verify that the CO and HC concentrations are within the regulation.
- If not, inspect the following.
- On-Board Diagnostic System
- Heated Oxygen Sensor (Front, Middle, Rear)
- Intake Manifold Vacuum
- Fuel Line Pressure
- Ignition Timing Control
- If not, inspect the following.
- If the systems are normal, replace the three way catalytic converter.