Operation CHARM
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Pontiac
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1990
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J2000/Sunbird L4-121 2.0L
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Fuel Injector
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Testing and Inspection
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Fuel Injector Cleaning Procedure
Fuel Injector Cleaning Procedure
Cleaning of injectors on throttle body injection units is not normally required or recommended.