Emission Control Systems: Testing and Inspection

INSPECTION
1. INITIAL CONDITIONS
a. Engine at normal operating temperature
b. Air cleaner installed
c. All pipes and hoses of air induction system connected
d. All accessories switched OFF
e. All vacuum lines properly connected

HINT: All vacuum hoses for EGR systems, etc. should be properly connected.

f. Sequential Multiport Fuel Injection (SFI) system wiring connectors fully plugged
g. Ignition timing checked correctly
h. Transmission in neutral position
i. Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROXIMATELY 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 (2,500 rpm and idle) test, follow the measurement order prescribed by the applicable local regulations.