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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine 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: Immersing Hose In Water
G11815797Courtesy of KIA MOTORS AMERICA, INC.
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