240 L4-2320cc 2.3L SOHC B23F FI (1983)
WARNING: Connecting nipple for CO-meter may be very hot.
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Start and warm up engine.
Check idle speed:
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idle speed should be 12.5 r/s (750 ± 20 rpm).
NOTE: Air conditioning should be disengaged.
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Adjust idle speed if required.
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If idle speed varies excessively check that air control valve hoses are not blocked.
Adjustment of idle speed (if required):
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Ground test point (blue-white wire).
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Adjust engine speed with idle screw to 12 r/s (720 rpm).
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If engine speed cannot be adjusted to correct value, adjust throttle valve.
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Remove test point ground.
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Engine speed should increase to 12.5 r/s (750 ± 20 rpm).
Disconnect Lambda-Sond (Oxygen Sensor):
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Check CO-content.
