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Home >> Lexus >> 1996 >> LX 450 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Fuel Evaporation System >> EVAP Check Valve
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EVAP Check Valve

  1. Remove EVAP check valve from vacuum hose to EVAP Vacuum Control Valve (VCV). The EVAP VCV is located on bracket, below air intake chamber, near engine oil dipstick. See Figure.
  2. Apply air pressure to Orange colored side of EVAP check valve. Air should flow through EVAP check valve. Apply air pressure to Black colored side of EVAP check valve. Air should not flow through EVAP check valve. Replace EVAP check valve if defective. The EVAP check valve should be installed with Black colored side toward the VCV.
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