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Home >> Mazda >> 1986 >> B2000 Base, 2D Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Evaporation System >> Component Testing >> Check & Cut Valve

Check & Cut Valve

  1. Remove check and cut valve. Connect a pressure gauge with "T" fitting on nipple leading to fuel tank. Cap opposite nipple. See Fig 1 . Valve must be held horizontally to prevent valve from closing passage.
    Fig 1: Testing Check and Cut Valve Hold valve horizontally during test.
    G34046
  2. Blow through open end of "T" fitting. When pressure gauge reads .14-.71 psi (.01-.05 kg/cm2 ), valve should open.
  3. Remove "T" fitting and gauge from fuel tank nipple, and connect to nipple at bottom of valve (atmosphere vent).
  4. Blow through open end of "T" fitting. Valve should open when pressure gauge reads .78-1.0 psi (.06-.07 kg/cm2 ). If valve does not operate as described, replace check and cut valve.
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