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Home >> Mitsubishi >> 2006 >> Lancer Evolution RS >> Repair and Diagnosis >> Engine Performance >> System >> Emission Control - Lancer Evolution >> Evaporative Emission Control System >> Check Valve Check
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Check Valve Check

Connect a hand vacuum pump to the check valve, apply negative pressure and check the airtightness.

CHECK VALVE CONDITION CHART

CONNECTED NIPPLE COLOR NORMAL CONDITION
Black Negative pressure leaks
Brown Negative pressure is maintained
Fig 1: Connecting Hand Vacuum Pump To Check Valve
G04296162Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.