Operation CHARM
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Pontiac
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1988
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6000 V6-191 3.1L
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Distributor
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Vacuum Spark Delay Valve
Vacuum Spark Delay Valve
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Description and Operation
Delay Valve Trapped Spark (DV-TS)
Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)
Distributor Spark Vacuum Delay Valve (DS-VDV)
Spark Retard Delay Valve (Srdv)
Vacuum Advance Delay
