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Home >> Subaru >> 1981 >> GLF Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition Control System >> Description

Ignition Control System: Description

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The ignition control system is designed to reduce emissions by controlling ignition timing. The system consists of a vacuum advance unit on the distributor, thermal vacuum valve (also operates EGR system), vacuum lines and orifice/check valve (1600 engines only).