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Mercury
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1997
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Mystique V6-153 2.5L DOHC VIN L SFI
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Repair and Diagnosis
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Maintenance
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Tune-up and Engine Performance Checks
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Ignition Timing
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Adjustments
Ignition Timing: Adjustments
Base
ignition timing
is referenced to the position of the Crankshaft Position
(CKP)
sensor and is set to 10 degrees +/- 2 degrees before top dead center and is not adjustable.