FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercury
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1993
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Grand Marquis V8-281 4.6L SOHC
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Repair and Diagnosis
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Powertrain Management
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Tune-up and Engine Performance Checks
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Ignition Timing
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Adjustments
Ignition Timing: Adjustments
INITIAL TIMING
Initial timing is preset at 10° plus or minus 2° BTDC and is not adjustable.