240 L4-2320cc 2.3L SOHC B23F FI (1983)
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Check value O.4 - O.8 %
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Adjustment of CO-content should only be made:
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if CO-content lies outside of check value.
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when all other possible causes of incorrect CO-content have been checked / corrected.
Adjustment of CO-content (if required):
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Remove adjustment seal.
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Switch off engine.
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Drill two 2 mm (5/64 in) holes in seal.
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Pull out plug with snap-ring pliers.
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Start engine.
Adjust CO-content:
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Adjustment value 0.6 %.
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Adjustment screw has a range of 15 turns and lacks distinct end stops.
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Turning counter-clockwise decreases CO-content.
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Turning clockwise increases CO-content.