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Evaporative Line Check

  1. Disconnect evaporative hose from canister. Connect the detached hose to a "U" tube type pressure gauge.
  2. Gradually apply low air pressure into "U" tube so that difference of water level should be 14" (356 mm).
  3. Then, bind the inlet of the "U" tube and leave bound for 5 minutes. If water drops no more than 1" (25 mm) after 5 minutes, evaporative line is in good condition.
    Fig 1: Testing Evaporative Lines Using "U" Tube Pressure Gauge
    G09310594Courtesy of MAZDA MOTORS CORP.
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