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2005
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Optima EX, 2.7 8
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control System/Fuel System - 2.7L
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MFI Control System
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Fuel Injector
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Inspection
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Using Stethoscope And Voltmeter
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Resistance Measurement Between Terminals
Resistance Measurement Between Terminals
Disconnect the connector at the injector.
Measure the resistance between terminals.
Standard value: 13-16 Ω (at 20°C (68°F))
Re-connect the connector to the injector.
Fig 1: Checking Fuel Injector Resistance
Courtesy of KIA MOTORS AMERICA, INC.