CAP - FUEL FILLER
DESCRIPTION
The plastic fuel tank filler tube cap isthreaded onto the end of the fuel fill tube. Certain models are equipped with
a 1/4 turn cap.
OPERATION
The loss of any fuel or vapor out of fuel filler tube is prevented by the use ofa pressure-vacuum fuel fill cap. Relief
valves inside the cap will release fuel tank pressure at predetermined pressures. Fuel tank vacuum will also be
released at predetermined values. This cap must be replaced by a similar unit if replacement is necessary. This is
in order for the system to remain effective.
CAUTION: Remove fill cap before servicing any fuel system component to relieve tank pressure. If equipped
with a Leak Detection Pump (LDP), or NVLD system, the cap must be tightened securely. If cap is left loose,
a Diagnostic Trouble Code (DTC) may be set.
REMOVAL
REMOVAL/INSTALLATION
If replacement of the 1/4 turn fuel tank filler tube cap is necessary, it mustbereplacedwithanidenticalcaptobe
sure of correct system operation.
CAUTION: Remove the fuel tank filler tube cap to relieve fuel tank pressure. The cap must be removed prior
to disconnecting any fuel system component or before draining the fuel tank.
