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Buick
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1996
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Riviera V6-3.8L VIN K
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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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Timing Marks and Indicators
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Locations
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Timing Marks
Timing Marks
The ignition timing is completely controlled by the Powertrain Control Module (PCM). No timing reference marks are provided.