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Home >> Infiniti >> 2001 >> Q45 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> On Board Refueling Vapor Recovery (ORVR) System >> Refueling EVAP Vapor Cut Valve Test
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Refueling EVAP Vapor Cut Valve Test

  1. Remove fuel tank. Remove fuel level sensor unit retainer. Drain fuel from tank using a hand pump. To check if refueling EVAP vapor cut valve is stuck closed, blow air into refueling EVAP vapor line. See Figure. If air flows freely into fuel tank, go to next step. If air does not flow freely into fuel tank, replace fuel tank.
  2. To check if refueling EVAP vapor cut valve is stuck open, connect a vacuum pump with a "T" to signal line and refueling EVAP vapor line. See Figure. Remove fuel gauge/fuel level sensor unit. Invert fuel tank. Apply 3.94 in. Hg (13.3 kPa) of vacuum to signal line and refueling EVAP vapor line. If vacuum does not hold, replace fuel tank. If vacuum holds, refueling EVAP vapor cut valve is okay.
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