EM08Q--01
A01746
CO/HC Meter
--
ENGINE MECHANICAL
CO/HC (2RZ--FE)
EM--5
CO/HC ( 2 RZ -- F E)
INSPECTION
HINT:
This check is used only to determine whether or not the idle CO/
HC complies with specifications.
1. INITIAL CONDITIONS
(a)
Engine at reach 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
(f)
EFI system wiring connectors fully plugged
(g)
Ignition timing set correctly
(h)
Transmission in neutral position
(i)
Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3 . RACE E NG I NE AT 2 , 5 0 0 RP M F O R AP P RO X . 1 8 0 S E -
CO NDS
4. INSERT CO/HC METER TESTING PROBE INTO
TAI L P I P E AT LE AS T 4 0 c m (1 . 3 ft) DURI NG I DLI NG
5 . CHE CK CO / HC CO NCE NTRATI O N AT I DLE
Idle CO concentration:
0 -- 0.5 %
Idle HC concentration:
Applicable local regulation
6. TROUBLESHOOTING
If the CO/HC concentration does not conform to specifications,
perform troubleshooting in the order given below.
(a)
Check oxygen sensor operation.
(b)
See the table next page for possible causes, and then in-
spect and correct the applicable causes if necessary.
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Pages From Supplement
3RZ-F,3RZ-FE