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Home >> BMW >> 1981 >> 320i >> Repair and Diagnosis (Single Page) >> Engine Performance >> Tune-Up >> Tune-Up - 4 CYL >> Ignition Timing >> Notes
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Ignition Timing: Notes

With engine at normal operating temperature, connect a timing light and tachometer to vehicle. Disconnect and plug distributor vacuum line. Start engine and adjust speed to specifications shown in following table. To adjust ignition timing, rotate distributor until center of ball embedded in flywheel is visible at edge of inspection hole.