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Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article.

IDLE SPEED & IGNITION TIMING SPECIFICATION

Application Idle RPM Timing Degrees BTDC @ RPM
325i Series 720-800 (1)
525i (1) (1)
All Others 750-850 10-16@750-850
(1) Information not available from manufacturer.