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first. Change the air filter element when
the restriction gauge reads near the
change filter line and the gauge is yellow.
Allowing the restriction gauge to reach
maximum affects engine performance and
fuel economy.
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 restrict air
flow and cause the engine to lose power
or shut down.
After installing a new air filter element,
reset the gauge by pressing the reset
button.
After operating your vehicle during heavy
snowfall or extreme rain, do the following:
• Snow: At the earliest opportunity, open
the hood and clear any snow and ice
from the air filter housing inlet and
reset the air filter restriction gauge.
• Extreme rain: The air filter element
dries out after approximately 15–30
minutes of driving at highway speeds.
At the earliest opportunity, open the
hood and reset the air filter restriction
gauge.
DRAINING THE FUEL FILTER
WATER TRAP - DIESEL
WARNING: Do not dispose of fuel
in the household refuse or the public
sewage system. Use an authorized waste
disposal facility.
Note: Only add fuel that meets the Ford
specification. See Fuel Quality (page 196).
Note: The in-tank pump will turn off
automatically after approximately 30
seconds.
The fuel water trap is above the frame rail
under the driver side of the vehicle.
E254226
Front of Vehicle.A
1. Switch the ignition off.
2. Loosen the drain plug approximately
one and a half turns.
3. Allow the water to drain.
4. Tighten the drain plug until you feel a
strong resistance.
5. Key on for 30 seconds then key off.
Repeat twice.
6. Start the engine.
7. Check for leaks.
Note: The water-in-fuel indicator lamp will
go out after approximately 2 seconds, with
the engine running.
ENGINE COOLANT CHECK
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.
366
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201907, Third-Printing-
Maintenance
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