Operation CHARM
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Buick
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1993
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Roadmaster V8-350 5.7L
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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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Ignition Timing Connector
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Locations
Ignition Timing Connector: Locations
EST BY-PASS CONNECTOR
EST Bypass Connector:
The EST By-Pass (Set Timing) connector (tan/black wire) is located in the harness close to distributor.
DO NOT
disconnect the 4 wire connector at distributor.