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ENGINE DRIVEABILITY AND EMISSIONS 6E–69 F4: Injector Balance Test – Press “Injector Off” key. Then, engine speed drops and vibration occurs when – Press “Quit” Key. Injector Balance Test Engine Speed 800 RPM Desired Idle Speed 762 RPM Engine Coolant Temperature 80 Start Up ECT 50 Intake Air Temperature 30 Start Up IAT 25 Manifold Absolute Pressure 35KPa Injector 1 On |