Toyota 3S-GE Repair Manual page 57

ENGINE —- ENGINE MECHANICAL EG-43
IDLE CO/HC CHECK
HINT: This check is used only to determine whether or
not the idle CO/HC complies with regulations.
INITIAL CONDITIONS
Engine at normal operating temperature
Air cleaner installed
' 3 § £ T T = ' § ' E ; 5 ; E 1 T I "
All vacuum lines properly connected
EFI system wiring connectors fully plugged
Ignition timing set correctly
Transmission in neutral position
Tachometer and CO/HC meter calibrated by hand
180 2. START ENGINE
2,500 rpm S°°"°'S 3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180
out
4 SECONDS
Tachometer
EC0137 EM8144 Z0304?
0 O Hc M M 4. INSERT CO/HC METER TESTING PROBE AT LEAST
° / ° 40 cm (1.3 ft) INTO TAILPIPE DURING IDLING
11 3 5. CHECK CO/HC CONCENTRATION AT IDLE
\ Idle CO concentration:
o 5 ' I 6
U lllfll" i i l l
- ./~ Idle HC concentration:
Q IQ') Applicable local regulation
P15558
711
CL J
K-v
'I €
All pipes and hoses of air induction system connected
All accessories switched OFF