Tacoma 2WD V6-3.4L (5VZ-FE) (1995)
Air/Fuel Mixture: Testing and Inspection
HINT:This check is used only to determine whether or not the idle CO / HC complies with regulations.
1. INITIAL CONDITIONS
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Engine at normal operating temperature.
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Air cleaner installed.
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All pipes and hoses of air induction system connected.
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All accessories switched OFF.
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All vacuum lines properly connected.
HINT: All vacuum hoses for EGR systems, etc. should be properly connected.
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SFI system wiring connectors fully plugged
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Ignition timing check correctly.
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Transmission in neutral position.
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Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180 SECONDS
4. INSERT CO/HC METER TESTING PROBE AT LEAST 40 cm (1.3 ft) INTO TAILPIPE DURING IDLING
5. IMMEDIATELY CHECK CO/HC CONCENTRATION AT IDLE AND/OR 2,500 RPM
HINT: When doing the 2 mode (idle and 2,500 rpm) test, these measurement order prescribed by the applicable local regulations.
Troubleshooting