Fillpipe Restrictor: Description and Operation
Fill Pipe Restrictor:
PURPOSE
Prevents the addition of leaded fuel, which would coat the oxygen sensor, and catalytic converter with lead.
Flapper controls evaporation of fuel during the time the filler cap is removed.
OPERATION
The smaller fill pipe center opening prevents leaded fuel nozzles from be inserted.
INSPECTION
Use dowel gauge to check opening.
Look for; tampering, broken flapper, excessive wear etc..