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Home >> Buick >> 2003 >> Regal LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 3.8L >> Fuel Systems >> Fuel Tank Leak Test >> Test Description

Test Description

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

  1. 1  - Perform this procedure to determine that no EVAP diagnostic DTC is present.
  2. 3  - This test locates fuel leakage in the fuel pipes.
  3. 4  - This tests for fuel leaks below the fuel tank fuel level.
  4. 5  - This test locates fuel vapors escaping above the fuel level in the fuel tank.
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