LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1994 >> Yukon V8-350 5.7L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Fillpipe Restrictor >> Testing and Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fillpipe Restrictor: Testing and Inspection

Fuel Door And Restrictor (Typical):




Fuel Filler Neck:






The fillpipe restrictor should prevent insertion of special dowel with a diameter same as that of leaded fuel pump nozzles (0.950").