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WARNING:Do not use starting fluid, such as ether, in the air
intake system (see air filter decal). Such fluid could cause
immediate explosive damage to the engine and possible personal injury.
Idle control:
For periods of extended idle, the throttle should be set at an rpm that is
sufficient to keep the engine at normal operating temperatures. This
action can reduce the amount of engine damaging deposits.
•The engine contains a unique “cold weather - idle up feature”
calibration strategy within the PCM. Under the appropriate conditions,
the strategy will automatically elevate the engine idle speed after
130 seconds of idling in cold ambient temperatures. For this feature to
be activated, the truck must be in P (Park) with the parking brake
applied and engine oil temperature below 158°F (70°C).
•Your vehicle may have a factory option for a stationary elevated idle
control (SEIC) through dash-mounted upfitter switches will allow the
operator to elevate the idle rpm for extended idle periods, as well as
aftermarket equipment such as PTO operation. This feature must be
configured even if ordered from the factory. See your authorized
dealer for required upfitting.
Operation in snow and rain
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 following actions are recommended after operating the vehicle up to
200 miles (320 km) in snowfall or extreme rain:
•Snow:At the earliest opportunity, open the hood and clear all the
snow and ice from the air filter housing inlet (do not remove the foam
filter) and reset the air filter restriction gauge.
Note:Removal of the foam filter degrades vehicle performance during
snow and hot weather conditions.
•Extreme rain:The air filter will dry after about 15–30 minutes at
highway speeds. At the earliest opportunity, open the hood and reset
the air filter restriction gauge.
Refer toAir filter and restriction gaugein theMaintenance and
Specificationschapter of this supplement for more information.
Driving
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3. Reconnect both fuel lines.
Using a fuel which has more than average impurities may require
the fuel filter to be replaced more frequently than the service
interval specifies.
The system will need to be purged of air after removal/changing of the
filter. SeePurging air from the fuel system after DFCM and
engine-mounted fuel filter replacementfollowing.
Purging air from the fuel system after DFCM and engine mounted
fuel filter replacement
Turn the ignition key to on for 30 seconds, then turn it to off. Do this a
total of six times in a row to purge any trapped air from the fuel system.
After filter service, a no start or rough running engine may indicate that
air is entering the system through the filter bowl seal or drain. Make sure
the drain is tight.
ENGINE OIL
Checking the engine oil level
Because it is normal to add some oil between oil changes, check your
engine oil level each time you stop for fuel. To check the engine oil level
consistently and accurately, the following procedure is recommended:
1. Have engine at normal operating temperature (at least into the
NORMAL range on the engine coolant temperature gauge).
2. Park the vehicle on a level surface, then turn off the engine and open
the hood.
3. Allow at least20 minutesafter engine shutdown to ensure that the
oil contained in the upper parts of the engine has returned to the oil
pan.
4. Protecting yourself from engine heat, pull out the dipstick, wipe it
clean and reinsert fully.
5. Read oil level on both sides of dipstick and use highest level (reading)
for the actual engine oil level.
Maintenance and Specifications
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After installation of the new filter
element, reset the gauge by pressing
the reset button on top of the
gauge.
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 following actions are recommend after operating the vehicle up to
200 miles (320 km) in heavy snowfall or extreme rain:
•Snow:At the earliest opportunity, open the hood and clear all the
snow and ice from the air filter housing inlet (do NOT remove the
foam filter) and reset the air filter restriction gauge.
•Extreme rain:The air filter will dry after about 15–30 minutes at
highway speeds. At the earliest opportunity, open the hood and reset
the air filter restriction gauge.
Air filter replacement:
When replacing the air filter element, use the Motorcraftair filter
element listed inMotorcraft part numberslater in this chapter.
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.
Failure to use the correct air filter element may result in severe
engine damage.
Maintenance and Specifications
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Tampering with noise control system prohibited
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, so as
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, 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/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.
Maintenance and Specifications
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