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Home >> Buick >> 1996 >> Roadmaster Base >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Ignition System >> Ignition Timing Systems >> Notes
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Ignition Timing Systems: Notes

NOTE: Unlike other type ignition systems, Opti-Spark does not use a by-pass circuit. Ignition timing on this system is constantly in EST mode.
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