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Home >> Chevrolet >> 2002 >> Impala Base, 3.4 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Testing & Engine Component Testing >> Emission Systems & Subsystems >> Fuel Tank Leak Test >> Description
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Fuel Tank Leak Test: Description

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 (EVAP) emission diagnostics complete one test cycle. The Malfunction Indicator Lamp (MIL) will illuminate after the EVAP diagnostics complete two test cycles.

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