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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 59 (Evaporative Emission Control System (HEV)) >> NVLD(Natural Vacuum Leakage Detection) >> Repair Procedures >> Inspection >> [Mechanical inspection]

[Mechanical inspection]

WARNING: This page is about a different variant/trim than selected.
  1. Turn ignition switch OFF.
  2. Disconnect the NVLD connector.
  3. Remove the NVLD.
  4. Connect the hose (A) to the canister hose connected port as below.
  5. After immersing the hose (A) in water, Apply more than 6 mbar (positive) pressure to Atmosphere port (B).
  6. If the NVLD is normal, many bubbles will indicate large leak.
    NOTE: Allowable internal leakage of 0.35 g/hr at 3 mbar will show as one bubble every second (approximately).
    Fig 1: Performing Mechanical Inspection On NVLD Connector
    G11815658Courtesy of KIA MOTORS AMERICA, INC.
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