buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Positive Crankcase Ventilation > < Evaporative Fuel Vapor Return Hose|Description and Operation
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Fillpipe Restrictor: Description and Operation

Fuel Door And Restrictor (Typical)

Fuel Filler Neck

PURPOSE

To prevent refueling with leaded fuel, the fuel filter neck has a built-in restrictor and deflector. The opening in the restrictor will accept only the
smaller unleaded gasoline fuel nozzle which must be fully inserted to bypass the deflector.

Positive Crankcase Ventilation > < Evaporative Fuel Vapor Return Hose|Description and Operation