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Home >> Buick >> 2003 >> Century Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System Testing & Engine Component Tests - 3.1L >> Emission Systems & Sub-Systems >> Fuel Tank Leak Test >> Test Description

Test Description

The numbers below refer to the step numbers in the diagnostic procedure.

  1. 3  - This test is to locate fuel leakage in the fuel lines.
  2. 4  - This tests for fuel leaks below the fuel tank fuel level.
  3. 5  - This test is to locate fuel vapors escaping above the fuel level in the fuel tank.
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