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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System & Fuel System - 3.6L - Troubleshooting & Diagnosis) >> Fuel Tank Leak Test >> Description

Fuel Tank Leak Test: Description

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The fuel tank leak test is used to locate any fuel or fuel vapor escaping the fuel tank area. Fuel vapors escaping above the fuel level will be detected when the evaporative emission (EVAP) leak diagnostic completes one test cycle. The malfunction indicator lamp (MIL) will illuminate after the EVAP leak diagnostic completes two test cycles for a large leak or up to eight test cycles for a small leak, only when a condition is detected.

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