Operation CHARM
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1987
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DeVille V8-252 4.1L
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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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Fuel Pressure
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Testing and Inspection
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Component Diagnostic Charts
Component Diagnostic Charts
Fig. 16 DEFI System Diagnosis, Chart A-4 (Fuel System Diagnosis). Except 1985-86 Models:
