Operation CHARM
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Ford
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1984
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F 350 2WD Pickup L6-300 4.9L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Ignition Timing
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Testing and Inspection
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Non-TFI IV
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Steps 17 Through 18
Steps 17 Through 18
Spark Timing, Steps 17 thru 18: