Golf L4-1588cc 1.6L DSL SOHC Turbo (1985)
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pinch hose 1 of idle speed boost valve
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remove hoses for crankcase ventilation and vent to atmosphere
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hose 2 from intake manifold
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hose 3 from air filter
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remove carbon canister purge line A from connector B of carbon canister shut off valve
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start engine and run at idle
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check idle speed. If necessary, set adjustment screw 5
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checking 800-1000 rpm
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adjusting 920 +/- 30 rpm
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check ignition timing. If necessary, adjust
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checking 4-8~ BTDC
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adjusting 6 +/- 1.5~ BTDC
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disconnect testor lead from terminal 1 of ignition coil and connect to OXS test connection at arrow (blue/white and brown wires) using harness
adaptor US 1112
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remove testor lead from spark plug wire no. 1
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remove TDC sensor from transmission
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press % button on testor
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start engine
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check OXS-duty cycle (dwell) at idle speed