2015 FORD F750 engine

If you have run out of fuel:
•If your vehicle is equipped with dual fuel tanks, adding four–five
gallons (15–19 liters) of fuel is enough to restart the engine. If your
vehicle is out of fuel and on a steep grade, more than four–five
gallons (15–19 liters) may be required.
•The fuel system must be primed before attempting to restart the
engine. See your engine operator’s manual for instructions on priming
the engine.
•Use caution not to overheat and damage the starter by cranking the
engine for an excessive period. You may need to crank the engine for
a longer time than normal. If the engine fails to start in 30 seconds,
turn the ignition to the off position and wait for two minutes before
cranking the engine again.
•Any remaining trapped air self-purges from the fuel system once the
engine starts running.
•The engine may run rough and produce white smoke while air is in
the fuel system. This is normal and should stop after a short period.
SeeGeneral informationin theInformation Displayschapter for
information on Miles to Empty.
REFUELING
WARNING:Fuel vapor burns violently and a fuel fire can cause
severe injuries. To help avoid injuries to you and others:
•Read and follow all the instructions on the pump island.
•Turn off your engine when you are refueling.
•Do not smoke if you are near fuel or refueling your vehicle.
•Keep sparks, flames and smoking materials away from fuel.
•Stay outside your vehicle and do not leave the fuel pump unattended
when refueling your vehicle - this is against the law in some places.
•Keep children away from the fuel pump; never let children pump
fuel.
•Do not use personal electronic devices while refueling.
Use the following guidelines to avoid electrostatic charge build-up when
filling an ungrounded fuel container:
•Place approved fuel container on the ground.
•DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
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•Keep the fuel pump nozzle in contact with the fuel container while
filling.
•DO NOT use a device that would hold the fuel pump handle in the fill
position.
Fuel Filler Cap
WARNING:The fuel system may be under pressure. If the fuel
filler cap is venting vapor or if you hear a hissing sound, wait
until it stops before completely removing the fuel filler cap. Otherwise,
fuel may spray out and injure you or others.
WARNING:If you do not use the proper fuel filler cap, excessive
pressure or vacuum in the fuel tank may damage the fuel system
or cause the fuel cap to disengage in a crash, which may result in
possible personal injury.
Note:If you must replace the fuel filler cap, replace it with a fuel filler
cap designed for your vehicle. The customer warranty may be void for
any damage to the fuel tank or fuel system if the correct genuine Ford,
Motorcraft or other certified fuel filler cap is not used.
Your fuel tank filler cap has an indexed design with a quarter–turn on
and off feature. When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise until it spins off.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.
5. Turn the filler cap clockwise a
14–turn until it clicks at least once.
If the check fuel cap light appears in the instrument cluster and stays on
after you start the engine, you not have installed the fuel filler cap
properly.
If the fuel cap light remains on, at the next opportunity, safely pull off
the road, remove the fuel filler cap, align the cap properly and reinstall
it. The check fuel cap light may not reset immediately; it may take
several driving cycles for the indicators to turn off. A driving cycle
consists of an engine start-up (after four or more hours with the engine
off) followed by normal city and highway driving.
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FUEL CONSUMPTION
Filling the Tank
The advertised capacity is the indicated capacity and the empty reserve
combined. Indicated capacity is the difference in the amount of fuel in a
full tank and a tank when the fuel gauge indicates empty. Empty reserve
is the amount of fuel in the tank after the fuel gauge indicates empty.
Note:The amount of usable fuel in the empty reserve varies. Do not rely
on it to increase your driving range. When refueling your vehicle after
the fuel gauge indicates empty, you might not be able to refuel the full
amount of the advertised capacity of the fuel tank due to the empty
reserve still present in the tank.
For consistent results when filling the fuel tank:
•Turn the ignition off before fueling. An inaccurate reading results if
you leave the engine running.
•Use the same fill rate (low–medium–high) each time you fill the tank.
•Allow no more than two automatic click–offs when filling.
•Have the vehicle loading and distribution the same every time.
•If your vehicle is equipped with dual fuel tanks, fill the tanks evenly
or the fuel gauge reading may fluctuate slightly until the fuel level
between the two tanks balances out and becomes equal.
Note:If your vehicle is equipped with dual fuel tanks add fuel to both
fuel tanks when refueling or engine performance may degrade.
Results are most accurate when the filling method is consistent.
Calculating Fuel Economy
Do not measure fuel economy during the first 1000 miles
(1600 kilometers) of driving; this is your engine’s break-in period. Start
measuring after driving 2000–3000 miles (3200–4800 kilometers). Also,
fuel expense, frequency of fill-ups or fuel gauge readings are not
accurate ways to measure fuel economy.
1. Fill the fuel tank completely and record the initial odometer reading.
2. Each time you fill the tank, record the amount of fuel added.
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Calculate fuel economy as follows:
•Standard: Divide miles traveled by gallons used.
•Metric: Multiply liters used by 100, then divide by kilometers
traveled.
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Keep a record for at least one month and record the type of driving (city
or highway). This provides an accurate estimate of your vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter shows how temperature impacts fuel
economy. In general, lower temperatures mean lower fuel economy.
SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM (DIESEL
ENGINE ONLY)
Your vehicle is equipped with a selective catalytic reduction (SCR)
system to help reduce emission levels of oxides of nitrogen from the
exhaust of the diesel engine. The system automatically injects diesel
exhaust fluid (DEF) into the exhaust system to enable proper SCR
function.
Importance of Maintaining the DEF Level
In order for the SCR system to operate properly, you must maintain the
DEF level. Generally, you should fill the DEF tank before the DEF gauge
in the instrument cluster reaches the first low level warning (see
Warning messages and vehicle operations).
The engine control unit monitors the amount of fluid available in the
DEF tank. Failure to maintain an adequate amount of DEF in the system
generates warning messages that appear in the information display and,
unless you refill the DEF tank, leads to a forced reduction of engine
operations.
Warning Messages and Vehicle Operations
The instrument cluster contains a DEF gauge and indicator lights to alert
you to any low DEF level conditions. The indicator lights illuminate if the
DEF gauge level drops below 1 gallon (3.8 liters) in the 5-gallon
(19.0 liters) DEF tank or 2 gallons (7.6 liters) in the 10-gallon
(34.0 liters) DEF tank.
Upon filling the DEF tank after a low-level warning, normal operation
resumes when you restart your vehicle.
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Continued driving without refilling results in the following actions as
required by the U.S. Environmental Protection Agency (EPA):
Low DEF Level Warning Indications and Vehicle Consequences
DEF Tank LevelIndicator
LampsConsequence Remedy
Above initial
warning threshold
(Over 20% full).None. None. None.
Initial warning
threshold (20% full).DEF solid
None.
Add 1 gallon
(3.8L) DEF to
5-gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
9-gallon (34.0L)
tank. Critical warning
threshold (15% full).DEF
blinking
None.
First vehicle
consequence (12.5%
full).DEF
blinking
/
Amber engine
solid25% torque
reduction.
Second vehicle
consequence
(Empty). System
cannot maintain
DEF pressure.DEF
blinking
/
Amber engine
solid
Torque
reduction
increases
from 25% to
40% at rate of
1% each
minute.
Final vehicle
consequence
(Empty) and engine
intentionally shut
down (key off), in
extended idle for
one hour or fuel
tank refilled.DEF
blinking
/
Amber engine
solid
(and/or MIL is
solid)/
Red engine
solid
•40% torque
reduction
•5 mph
(8 km/h)
vehicle speed
limit
•1000 RPM
engine speed
limit.Add 1 gallon
(3.8L) DEF to
5-gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
9-gallon (34.0L)
tank. Allow the
system to prime.
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Low DEF Level Warning Indications and Vehicle Consequences
for Emergency Vehicles
DEF Tank LevelIndicator
LampsConsequence Remedy
Above initial
warning threshold
(Over 25% full).None. None. None.
Below initial warning
threshold (25% full).DEF solid
None.
Add 1 gallon
(3.8L) DEF to
5-gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
9-gallon (34.0L)
tank.. Critical warning
threshold (20% full).DEF
blinking
None.
First vehicle
consequence (15%
full).DEF
blinking
/
Amber engine
solidNone.
Final vehicle
consequence
(Empty) and engine
intentionally shut
down (key off) or in
extended idle for
one hour.DEF
blinking
/
Amber engine
solid
/
Red engine
solidNone.Add 1 gallon
(3.8L) DEF to
5-gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
9-gallon (34.0L)
tank. Allow the
system to prime.
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Incorrect DEF Quality Warning Indications and Vehicle
Consequences
ConditionIndicator
LampsConsequence Remedy
Correct DEF quality. None. None. None.
Initial warning when
detecting incorrect
DEF quality.Amber engine
solid
None.
Replace DEF
with
Ford-approved Initial warning one
hour after detecting
incorrect DEF
quality.Amber engine
solid
25% torque
reduction.
Initial warning three
hours after detecting
incorrect DEF
quality.Amber engine
solid
Torque
reduction
increases
from 25% to
40% at rate of
1% each
minute.
Final vehicle
consequence three
hours after detecting
incorrect DEF
quality and engine
intentionally shut
down (key off), in
extended idle for
one hour or fuel
tank refilled.
*
Amber engine
solid
/
Red engine
solid
•25% torque
reduction
•5 mph
(8 km/h)
vehicle speed
limit
•1000 RPM
engine speed
limit.
**
*
Refueling the fuel tank is increasing the fuel volume level by at least
15%.
**Final consequence for vehicles equipped with a manual transmission is
1000 RPM. Final consequence for vehicles equipped with an automatic
transmission is 1100 RPM.
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Incorrect DEF Quality Warning Indications and Vehicle
Consequences for Emergency Vehicles
ConditionIndicator
LampsConsequence Remedy
Correct DEF quality. None. None. None.
Initial warning when
detecting incorrect
DEF quality.Amber engine
solid
None.
Replace DEF
with
Ford-approved
DEF. Initial warning
10 hours after
detecting incorrect
DEF quality.Amber engine
solid
None.
Final vehicle
consequence
20 hours after
detecting incorrect
DEF quality and
engine intentionally
shut down (key off),
in extended idle for
one hour or fuel
tank refilled.
*
Amber engine
solidNone.
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