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Home >> Geo >> 1990 >> Prizm Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Ignition Timing >> Advance Timing >> Ignition Timing Advance
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Ignition Timing Advance

Ignition timing advance curve is controlled by the Electronic Control Module (ECM). Proper pick-up coil air gap is necessary.

PICK-UP COIL AIR GAP (1)

Application Clearance In. (mm)
All Models .008-.016 (.20-.41)
(1) Same as crank angle sensor air gap.