Diagnostic Test

1. Turn ignition switch OFF.
2. Remove fuel filler cap.
3. Wipe clean valve housing.
   Fig 1: Fuel Filler Cap Components

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4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap.
   Fig 2: Checking Valve Opening Pressure And Vacuum

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5. Check valve opening pressure and vacuum.

   Pressure:	15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2 , 2.22 - 2.90 psi)
   Vacuum:	- 6.0 to - 3.3 kPa (- 0.061 to - 0.034 kg/cm2 , - 0.87 to - 0.48 psi)

Is the inspection result normal?

YES 

INSPECTION END

NO 

GO TO STEP 2  .

Replace fuel filler cap.

INSPECTION END