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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1040 (Engine Controls And Fuel - 6.6L - Troubleshooting & Diagnosis) >> Charge Air Cooler Diagnosis (Induction System Smoke Test) >> Smoke Test Application

Smoke Test Application

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • To operate the EVAP tester, refer to J 41413-200  operation manual.
  • Smoke at the EGR valve vent port is normal.
  1. Ignition OFF, remove the air filter restriction indicator.
  2. Connect the J 41413-200  to the vehicle at the air restrictor indicator port.
  3. Place the air filter in a disposable plastic bag in the air cleaner housing to help prevent smoke leakage.
  4. Apply smoke continuously with the J 41413-200  while moving all duct work, pipes, and tubes.
  5. To improve the visibility of the smoke exiting the engine, observe the suspected leak area from different angles.
  6. Inspect for smoke at the following locations:
    • Crankcase ventilation hoses and pipes
    • Mass air flow intake air ducts
    • PCV valve and seals
    • Turbocharger inlet and outlet connections
    • Replace the affected gasket, seal, or component as necessary.
  7. Retest the engine for air leaks.
  8. Remove the disposable bag from the air filter. Install the air filter and air filter restriction indicator.
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