Operation CHARM
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Buick
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1991
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Park Avenue Ultra V6-3.8L SC VIN 1
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Spark Plug
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Specifications
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Spark Plug Gap
Spark Plug Gap
Spark Plug
Gap
.060 in. (1.5 mm)