Quest Minivan XE V6-2960cc 3.0L SOHC MFI (VG30E) (1998)
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Rollover Valve: Testing and Inspection
FUEL CHECK VALVE (With rollover valve) (Except for California)
1. Blow air through connector on fuel tank side.
A considerable resistance should be felt and a portion of air flow should be directed toward the EVAP canister side.
2. Blow air through connector on EVAP canister side. Air flow should be smoothly directed toward fuel tank side.
3. If fuel check valve is suspected of not properly functioning in steps 1 and 2 above, replace it.
Rollover valve operation
Ensure that continuity of air passage does not exist when the installed rollover valve is tilted to 90 or 180 degrees.