2021 FORD F650/750 check engine

GENERAL INFORMATION
WARNING: Making modifications
to various parts, components and
systems of the vehicle, such as brake and
steering systems, can adversely affect
the quality, reliability and operation of
your vehicle and could result in property
damage, personal injury or death. Such
modifications must be avoided. WARNING:
Failure to properly
perform maintenance and servicing
procedures could result in vehicle
damage, personal injury or death. WARNING:
Take care when
performing any maintenance, system
check or service on your vehicle. Some
of the materials may also be hazardous
if used, serviced or handled improperly
and could result in property damage,
personal injury or death.
If the owner or operator of the vehicle is a
skilled technician and intends on
performing the vehicle maintenance and
service, he is strongly urged to purchase a
service manual.
Always use care when performing vehicle
maintenance, repairs or system checks.
Improper or incomplete service could result
in your vehicle not working properly which
may result in personal injury or damage to
your vehicle or equipment. It is the
operator ’s responsibility to see that your
vehicle receives proper care and
maintenance. If you have any questions
about performing service, have the service
done by a qualified technician.
To help you service your vehicle, we
provide scheduled maintenance
information which makes tracking routine
service easy. See
Scheduled
Maintenance (page 319). If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. Motorcraft® parts are
designed and built to provide the best
performance in your vehicle.
Servicing Guidelines
WARNING: The use of inferior parts
can adversely affect the quality and
reliability of your vehicle and could result
in property damage, personal injury or
death.
When servicing your vehicle:
• Always wear safety glasses for eye
protection.
• Always set the parking brake or chock
the wheels.
• Always use support stands, not a jack,
when working under a raised vehicle.
• Always turn off the ignition unless a
procedure requires the engine to be
running.
• Always avoid contact with hot metal
parts. Allow the components to cool
before working with, or around, them.
• Always operate the engine in a
well-ventilated area.
• Do not wear loose-fitting clothing,
hanging jewelry, watches or rings.
• Do not smoke.
• Do not work on the brakes or the clutch
unless you take the proper precautions
to avoid inhaling friction material dust.
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Maintenance

UNDER HOOD OVERVIEW - 6.7L DIESEL
Engine compartment fuse box. See Fuses (page 193).
A
Windshield washer fluid reservoir. See
Washer Fluid Check (page 242).
B
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 236).
C
Secondary Cooling System Reservoir. See Engine Coolant Check (page 231).
D
Engine coolant reservoir.
See Engine Coolant Check (page 231).
E
Secondary fuel filter. See
Draining the Fuel Filter Water Trap (page 225).
F
Engine oil separator. See Changing the Engine Oil and Oil Filter (page 219).
G
Engine oil filler cap.
See Engine Oil Check (page 218).
H
Brake fluid reservoir.
See Brake Fluid Check (page 237).
I
Power steering fluid reservoir. See
Power Steering Fluid Check (page 238).
J
Air brake compressor. See
Brake System Inspection (page 248).
K
Engine oil dipstick.
See Engine Oil Dipstick (page 217).
L
Air cleaner assembly. See Changing the Engine Oil and Oil Filter (page 219).
M
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UNDER HOOD OVERVIEW - 7.3L
Engine compartment fuse box. See Fuses (page 193).
A
Windshield washer fluid reservoir. See
Washer Fluid Check (page 242).
B
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 236).
C
Engine coolant reservoir. See
Engine Coolant Check (page 226).
D
Engine oil dipstick. See
Engine Oil Dipstick (page 217).
E
Engine oil filler cap. See
Engine Oil Check (page 217).
F
Brake fluid reservoir. See
Brake Fluid Check (page 237).
G
Power steering fluid reservoir. See
Power Steering Fluid Check (page 238).
H
Air cleaner assembly. See
Changing the Engine Air Filter (page 223).
I
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ENGINE OIL DIPSTICK - 7.3L
Minimum.
A
Nominal.
B
Maximum.
C
ENGINE OIL DIPSTICK - 6.7L
DIESEL Minimum.
A
Maximum.
B
ENGINE OIL CHECK - 7.3L
To check the engine oil level consistently
and accurately, do the following:
1. Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N). 2. Run the engine until it reaches normal
operating temperature.
3. Make sure that your vehicle is on level ground.
4. Switch the engine off and wait 15 minutes for the oil to drain into the oil
pan. Checking the engine oil level too
soon after you switch the engine off
may result in an inaccurate reading.
5. Open the hood. See Maintenance
(page 212).
6. Remove the dipstick and wipe it with a clean, lint-free cloth. See
Maintenance
(page 212).
7. Replace the dipstick and remove it again to check the oil level. See
Maintenance
(page 212).
8. Make sure that the oil level is between
the maximum and minimum marks. If
the oil level is at the minimum mark,
add oil immediately. See
Capacities
and Specifications (page 281).
9. If the oil level is correct, replace the dipstick and make sure it is fully seated.
Note: Do not remove the dipstick when the
engine is running.
Note: If the oil level is between the
maximum and minimum marks, the oil level
is acceptable. Do not add oil.
Note: The oil consumption of new engines
reaches its normal level after approximately
3,000 mi (5,000 km)
.
Adding Engine Oil WARNING: Do not remove the filler
cap when the engine is running.
Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that may
not be covered by the vehicle Warranty.
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AB

Only use oils certified for gasoline engines
by the American Petroleum Institute (API).
An oil with this trademark symbol
conforms to the current engine and
emission system protection standards and
fuel economy requirements of the
International Lubricants Specification
Advisory Committee (ILSAC).
To top up the engine oil level do the
following:
1. Clean the area surrounding the engine
oil filler cap before you remove it.
2. Remove the engine oil filler cap.
3. Add engine oil that meets the correct specification.
4. Recheck the oil level.
5. If the oil level is correct, replace the dipstick and make sure it is fully seated.
6. Replace the engine oil filler cap. Turn it clockwise until you feel a strong
resistance.
Note: Do not add oil further than the
maximum mark. Oil levels above the
maximum mark may cause engine damage.
Note: Make sure you install the oil filler cap
correctly.
Note: Soak up any spillage with an
absorbent cloth immediately. ENGINE OIL CHECK - 6.7L
DIESEL
To check the engine oil level consistently
and accurately, do the following:
1.
Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N).
2. Run engine until it reaches normal operating temperature.
3. Make sure that your vehicle is on level ground.
4. Switch the engine off and wait 15 minutes for the oil to drain into the oil
pan. Checking the engine oil level too
soon after you switch the engine off
may result in an inaccurate reading.
5. Open the hood. See Opening and
Closing the Hood (page 213).
6. Remove the dipstick and wipe it with a clean, lint-free cloth. See
Under
Hood Overview (page 215).
7. Replace the dipstick and remove it again to check the oil level. See
Engine Oil Dipstick
(page 217).
8. Make sure that the oil level is between
the maximum and minimum marks. If
the oil level is at the minimum mark,
add oil immediately. See
Capacities
and Specifications (page 288).
9. If the oil level is correct, replace the dipstick and make sure it is fully seated.
Note: Do not remove the dipstick when the
engine is running.
Note: If the oil level is between the
maximum and minimum marks, the oil level
is acceptable. Do not add oil.
Note: The oil consumption of new engines
reaches its normal level after approximately
3,000 mi (5,000 km)
.
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Adding Engine Oil
WARNING: Do not remove the filler
cap when the engine is running.
Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that may
not be covered by the vehicle Warranty.
To top up the engine oil level do the
following:
1. Clean the area surrounding the engine oil filler cap before you remove it.
2. Remove the engine oil filler cap. See Under Hood Overview (page 215).
Turn it counterclockwise and remove
it.
3. Add engine oil of the proper viscosity and grade that meets Ford
specifications. See
Capacities and
Specifications (page 288). You may
have to use a funnel to pour the engine
oil into the opening.
4. Recheck the oil level.
5. If the oil level is correct, replace the dipstick and make sure it is fully seated.
6. Replace the engine oil filler cap. Turn it clockwise until you feel a strong
resistance.
Note: Do not add oil further than the
maximum mark. Oil levels above the
maximum mark may cause engine damage.
Note: Make sure you install the oil filler cap
correctly.
Note: Soak up any spillage with an
absorbent cloth immediately. Engine lubrication for severe
service operation
The following conditions define severe
operation for which engine operation with
SAE 5W-40 oil which meets Ford
specification, WSS-M2C171-F1, is
recommended. Oil and oil filter change
intervals will be determined by the
Intelligent Oil Life Monitor™ as noted
previously.
CHANGING THE ENGINE OIL
AND OIL FILTER
WARNING: Do not handle a hot oil
filter with bare hands. WARNING:
Continuous contact
with used motor oil has caused cancer
in laboratory mice. Protect your skin by
washing with soap and water.
If your vehicle is equipped with a diesel
engine, an Intelligent Oil Life Monitor™
calculates the proper oil change service
interval. When the information display
indicates: OIL CHANGE REQUIRED, change
the engine oil and oil filter. See
Information Displays
(page 70).
The engine oil filter protects your engine
by filtering harmful, abrasive or sludge
particles and particles significantly smaller
than most available will-fit filters. See
Motorcraft Parts
(page 283).
1. Unscrew the oil filter and oil pan drain plug and wait for the oil to drain.
2. Replace the filter.
3. Reinstall the oil pan drain plug.
4. Refill the engine with new oil. See Capacities and Specifications (page
288
).
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From the main menu scroll to:
Action and Description
Message
Press the down arrow
button, then from this menu
scroll to the following
message.
Truck Info
Press the OK button.
Mainten-
ance
Monitor
Press the down arrow
button, then from this menu
scroll to the following
message.
Oil Life:
xxx%
Press the
OK button.
Oil Life
Press and hold the
OK
button until the instrument
cluster displays the
following message.
Oil Life
Hold OK to
Reset
Oil Life: 100%
When the oil change indic-
ator resets, the instrument
cluster displays 100%.
Repeat the process if the oil
change indicator does not
reset.
CHANGING THE ENGINE AIR
FILTER - 6.7L DIESEL
Air Filter Restriction Gauge WARNING:
To reduce the risk of
vehicle damage and personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running. Note:
Operating your vehicle in heavy
snowfall or extreme rain conditions may
allow excessive amounts of snow or water
into the air intake system. This could plug
or soak the air filter and cause the engine to
lose power or shut down. The restriction gauge, on the upper housing
of the air filter assembly, measures the
vacuum inside the air filter. The more the
air filter is dirty or clogged, the higher the
vacuum reading.
Check the air filter restriction gauge
whenever you open the hood to perform
general engine maintenance or at least
every 7,500 mi (12,000 km). If you operate
your vehicle in extremely dusty conditions,
check and reset the gauge at least every
500 mi (800 km), or two weeks, whichever
comes first. Change the air filter when the
restriction gauge reads near the change
filter line and the gauge is yellow. If you
allow the restriction gauge to reach
maximum restriction, you can affect your
engine performance and fuel economy.
Note:
Do not blow out the air filter element
with compressed air since the compressed
air could damage the filter paper.
Note: Do not rely on filter appearance
alone. A filter which appears to be dirty may
have several thousand miles (kilometers)
of life remaining.
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2. Locate the diesel fuel conditioner
module and place an appropriate
container under the drain port. 3.
Rotate the drain counterclockwise until
the O-ring is visible. Allow the diesel
fuel conditioner module to drain for
approximately 25 seconds or until
clean fuel is observed. Rotate the drain
clockwise to tighten it. If no liquid
drains, there may be a clog in the drain.
Have the conditioner module serviced
by an authorized dealer.
4. Make sure that you fully tighten the drain valve and then remove the
container from under your vehicle.
5. Restart the engine. If the Water in Fuel
Drain Filter message and light
continues to illuminate, have the fuel
system checked and repaired. ENGINE COOLANT CHECK -
7.3L WARNING:
Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury. WARNING:
Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield. WARNING:
To reduce the risk of
personal injury, make sure the engine is
cool before unscrewing the coolant
pressure relief cap. The cooling system
is under pressure. Steam and hot liquid
can come out forcefully when you loosen
the cap slightly. WARNING:
Do not add coolant
further than the MAX mark.
When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance
(page 319).
Note: Make sure that the coolant level is
between the
MIN and MAX marks on the
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
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