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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Controls And Fuel - 3.5L - Troubleshooting & Diagnosis) >> Fuel Injector Balance Test >> Reference Information >> Fuel Injector Balance Test with the Active Fuel Injector Tester

Fuel Injector Balance Test with the Active Fuel Injector Tester

WARNING: This page is about a different variant/trim than selected.
  1. Turn OFF all accessories.
  2. Turn OFF the ignition.
  3. Install the Active Fuel Injector Tester. Refer to the Active Fuel Injector Tester User Guide.
  4. Turn ON the Active Fuel Injector Tester and select the vehicle.
  5. Turn ON the ignition and perform the Injector Test.
    • If the Active Fuel Injector Tester aborts testing due to fuel pressure or fuel leak down, refer to Fuel System Diagnosis .
  6. View the test results.
    • If any injector exceeds the recommended tolerance, replace the injector(s).
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