Idle And Or 2500 Rpm Co Hc Check - Toyota 22R-E Service Manual

EG1–12
ENGINE – ENGINE MECHANICAL
IDLE AND OR 2500 RPM CO HC
CHECK
HINT: This check method is used only to determine
whether or not the idle and/or 2,500 rpm CO/HC
complies with regulations.
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air intake system connected
(d) All accessories switched OFF
(e) All vacuum lines properly connected
HINT: All vacuum hoses for the air suction, EGR sys–
tems, etc. should be properly connected.
(f) MFI system wiring connectors fully plugged
(g) Ignition timing set correctly
(h) Transmission in neutral
(i) Idle speed set correctly
(j) Tachometer and CO/HC meter calibrated and at hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX.3
MINUTES
4. INSERT CO / HC METER TESTING PROBE INTO
TAILPIPE AT LEAST 40 cm (1.3 ft)
5. IMMEDIATELY CHECK CO/HC CONCENTRATION
AT IDLE AND/OR 2,500 RPM
HINT:
When performing the 2 mode (2,500 rpm and idle)
test, follow the measurement order prescribed by the
applicable local regulations.