5000S Quattro Sedan L5-2309cc 2.3L SOHC (NF) (1988)
Air/Fuel Mixture: Adjustments
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Engine oil temperature: minimum 80°C (176°F)
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Ignition timing point OK
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remove cap from CO probe receptacle
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connect CO test hose to probe receptacle (arrow)
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hose must fit snug so there is no exhaust leak
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disconnect and plug crankcase ventilation hoses at cylinder head cover (arrows)
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remove charcoal canister hose from intake air boot and leave open
NOTE: Intake air boot hose connector has a calibrated orifice and must remain open.
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start engine