Operation CHARM
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Ford
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1987
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F 250 2WD Pickup V8-460 7.5L
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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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Spark Timing Test
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Non-TFI IV
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Steps 7 Through 9
Steps 7 Through 9
Spark Timing, Steps 7 thru 9: