Mountaineer 2WD V8-4.6L SOHC VIN W (2003)
Fuel Filler Cap: Description and Operation
Gasoline Fuel System
FUEL FILLER CAP
Fuel Filler Cap
The fuel filler cap (Figure 106) is used to prevent fuel spill and close the evaporative emission/fuel system to atmosphere. Some vehicles may have
a Fuel Cap On Indicator Lamp (FCIL) in the instrument cluster which will illuminate when there is a failure in the vapor management system that
may be due to the fuel filler cap not being sealed.
Refer to the individual component for information on the following Evaporative Emission System components: fuel vapor control valve, fuel vapor
vent valve assembly and fuel vapor separator assembly.