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1.9L, 2.3L Turbo

  1. Connect tachometer to engine and disconnect ISC motor. Run engine at 2000 RPM and lock speed with throttle body stop screw. As engine continues to run, disconnect and reconnect each injector individually. If each injector causes drop in engine speed of at least 150 RPM, injectors are giving proper fuel delivery.
  2. Replace any injectors that do not cause sufficient drop in engine speed. When test is completed and all injectors cause equal drop in speed, shut off engine. Reconnect ISC motor and reset curb idle. Refer to emission control specifications on decal in engine compartment.
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