Operation CHARM
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Mercedes Benz
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1987
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420SEL (126.035) V8-4.2L (116.965)
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Technical Service Bulletins
Ignition System: Technical Service Bulletins
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By Symptom
Driveability
Engine - Hesitates/Cuts Out/Quits/Difficult to Start
Engine - Cuts Out Intermittently
Erratic Shifting
Engine - Hesitates/Cuts Out/Quits/Difficult to Start
Leaks
Engine - Intermittent Poor Performance
All Technical Service Bulletins
Engine - Hesitates/Cuts Out/Quits/Difficult to Start
Spark Plug Wrench - Application and Update
Ignition - Caution about Spark Plug Wrenches
Engine - Cuts Out Intermittently
Engine - Intermittent Poor Performance
Ignition System - Wires with Crimp-On terminals