Operation CHARM
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Pontiac
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1991
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6000 V6-191 3.1L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Ignition Timing
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Adjustments
Ignition Timing: Adjustments
With the DIS ignition system, the reluctor is an integral part of the crankshaft, and the crankshaft sensor is mounted in a fixed position, therefor timing adjustment is not possible.