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Home >> Mercury >> 1998 >> Grand Marquis GS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Specifications >> Engine Controls - Service & Adjustment Specifications 4.6L >> Ignition System >> Ignition Timing
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Ignition Timing

NOTE: Manufacturer does not recommend checking ignition timing, as faulty readings are common and timing is not adjustable.
BASE IGNITION TIMING

Application Degrees BTDC
Grand Marquis (1) 8-12
(1) Timing is not adjustable.
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