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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System & Fuel System - 1.8L (Lay) - Troubleshooting & Diagnosis) >> Fuel Tank Leak Test >> System Testing

System Testing

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: Refer to the J 41413-200  Evaporative Emissions System Tester (EEST) operation manual for detailed instructions. See Special Tools .
  1. Turn the ignition OFF, connect the J 41415-30  to the fuel tank filler neck. See Special Tools . Connect the J 41413-200  to the J 41415-30  . See Special Tools .
  2. Disconnect the EVAP filter hose, inlet side, at the 13 mm (0.5 in) diameter steel vent pipe. The EVAP filter hose has a quick connect fitting. Refer to EVAP Canister Filter Replacement for the quick connect fitting servicing procedure.
  3. Plug the open end of the EVAP filter hose with the J 41413-323 or J 41413-324 adapter from the J 41413-300  . See Special Tools .
  4. Turn the nitrogen/smoke valve to Nitrogen and test for a fuel leak while the system is under pressure.
    • Verify there is no liquid fuel leak. if a leak is located repair as necessary.
    5. IMPORTANT: It may be necessary to partially lower the fuel tank.
  5. Using the J 41413-200  introduce smoke into the EVAP system. See Special Tools . Inspect for vapor leaks in any of the following locations:
    • The fuel tank, the fill limiter vent valve, the pressure relief valve, and the grade vent valves
    • The fuel sender housing, the fuel sender seal, the fuel pipe, and the EVAP pipes
    • The fuel fill pipe and hose
    • Verify there is no fuel vapor leak. if a leak is located repair as necessary.
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