fuel consumption FORD SUPER DUTY 2014 3.G Diesel Supplement Manual

Emission Control System(s) Laws
WARNING
Do not remove or alter the original
equipment floor covering or
insulation between it and the metal
floor of the vehicle. The floor covering and
insulation protect occupants of the vehicle
from the engine and exhaust system heat
and noise. On vehicles with no original
equipment floor covering insulation, do not
carry passengers in a manner that permits
prolonged skin contact with the metal
floor. Provide adequate insulation. Failure
to follow these instructions may result in
fire or personal injury. In the U.S. federal law and certain state
laws prohibit removing or rendering
inoperative emission control system(s).
Similar federal or provincial laws may
apply in Canada. Ford recommends
against any vehicle modification without
determining applicable law.
Tampering with emissions
control systems (including
related sensors and the diesel
exhaust fluid injection system) can result
in reduced engine power and the
illumination of the service engine soon
light.
Tampering with a Noise Control
System
Federal law prohibits the following acts or
the causing thereof: (1) The removal or
rendering inoperative by any person other
than for purposes of maintenance, repair
or replacement of any device or element
of design incorporated into any new vehicle
for the purpose of noise control prior to its
sale or delivery to the ultimate purchaser
or while it is in use, or (2) the use of the
vehicle after such device or element of
design has been removed or rendered
inoperative by any person. Among those acts, which the U.S.
Environmental Protection Agency may
presume to constitute tampering are the
acts listed below:
•
Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.
• Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer ’s
specifications.
The complexity of the diesel engine makes
it so the owner is discouraged from
attempting to perform maintenance other
than the services described in this
supplement.
If you experience difficult starting the
engine, rough idling, excessive exhaust
smoke, a decrease in engine performance
or excess fuel consumption, perform the
following checks:
• A plugged or disconnected air inlet
system or engine air filter element
• Water in the fuel filter and water
separator
• A clogged fuel filter
• Contaminated fuel
• Air in the fuel system, due to loose
connections
• An open or pinched sensor hose
• Check engine oil level
• Wrong fuel or oil viscosity for climactic
conditions
If these checks do not help you correct the
engine performance problem you are
experiencing, consult an authorized dealer.
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Super Duty (TFA) Fuel and Refueling

Coolant Change
At specific mileage intervals, as listed in
the scheduled maintenance information,
the coolant should be changed. The
optional information display, if equipped,
will also display the message COOLANT
CHANGE REQUIRED at this time.
See Capacities and Specifications
(page 54). for the proper coolant.
Engine-driven Cooling Fan (Fan
Clutch)
Your vehicle is equipped with an engine
driven cooling fan drive (also called a fan
clutch). This fan drive changes the fan
speed to match the vehicle ’s changing
cooling air flow requirements. Fan speed,
fan noise level and fuel consumption all
will increase based on the driving
conditions that include trailer towing, hill
climbing, heavy loads, high speed and high
ambient temperature, individually or in
combination.
The fan drive is designed to provide the
minimum fan speed (and resulting
minimum fan noise and fuel consumption)
required to meet the ever changing vehicle
cooling air flow requirements. You will hear
the amount of fan noise increasing and
decreasing as the engine power
requirements and vehicle driving conditions
change as you drive. This is to be expected
as being normal to the operation of your
vehicle. High levels of fan noise might also
be heard when your engine is first started,
and should normally decrease after driving
for a short time. CHANGING THE ENGINE AIR
FILTER
Air Filter Restriction Gauge WARNING
To reduce the risk of vehicle damage
and/or personal burn injuries do not
start your engine with the air filter
removed and do not remove it while the
engine is running. Note:
Vehicle operation in heavy snowfall
or extreme rain conditions may feed
excessive amounts of snow/water into the
air intake system. This could plug/soak the
air filter with snow and may cause the
engine to lose power and possibly shut
down. The restriction gauge, located on the upper
housing of the air filter assembly, measures
the vacuum inside the air filter. The more
the air filter is restricted (dirty, clogged),
the higher the vacuum reading
Check the air filter restriction gauge
whenever the hood is raised to perform
general engine maintenance at least every
7,500 miles (12,000 km). If the vehicle is
operated in extremely dusty conditions,
check and reset the gauge at least every
500 miles (800 km), or two weeks,
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Super Duty (TFA) MaintenanceE163372