Operation CHARM
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Porsche
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1986
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928 S V8-4957cc 5.0L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Misfiring
Misfiring
1.
Poor electrical connections.
2.
Power supply to ECU.
3.
Speed/reference mark sensor.
4.
Faulty charging system.