2004 FORD F350 fuel cap

Fuel Filler Cap
Your fuel tank filler cap has an indexed design with a 1/8 turn on/off
feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise 1/8 of a turn until it
stops.
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 1/8 of a turn until it stops.
If the“Service Engine Soon/Check Engine”indicator comes on and stays
on after you start the engine, the fuel filler cap may not be properly
installed. Turn off the engine, remove the fuel filler cap, align the cap
properly and reinstall it.
If you must replace the fuel filler cap, replace it with a fuel filler
cap that is 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 or Motorcraft fuel filler cap is not used.
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.
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 collision, which may result in possible
personal injury.
Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives. Studies indicate that
these additives can cause your vehicle’s emission control system to
deteriorate more rapidly. In Canada, premium grade fuel generally
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Cleaner air
Ford endorses the use of reformulated“cleaner-burning”gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
•YourService engine soonindicator may come on. For more
information on theService engine soonindicator, refer to the
Instrument clusterchapter.
Fuel Filter
For fuel filter replacement, see your dealer or a qualified service
technician. Refer to the scheduled maintenance guide for the appropriate
intervals for changing the fuel filter.
Replace the fuel filter with an authorized Motorcraft part. The
customer warranty may be void for any damage to the fuel system
if an authorized Motorcraft fuel filter is not used.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1,600 km (1,000
miles) of driving (engine break-in period). You will get a more accurate
measurement after 3,000 km–5,000 km (2,000 miles-3,000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill capacities
section of this chapter.
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The advertised capacity is the amount of 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 small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase 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 engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low—medium—high) each time
the tank is filled.
•Allow no more than 2 automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in kilometers or miles).
2. Each time you fill the tank, record the amount of fuel added (in liters
or gallons).
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. Follow one of the simple calculations in order to determine fuel
economy:
Calculation 1:Multiply liters used by 100, then divide by total
kilometers traveled.
Calculation 2:Divide total miles traveled by total gallons used.
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On board diagnostics (OBD-II)
Your vehicle is equipped with a computer that monitors the engine’s
emission control system. This system is commonly known as the On
Board Diagnostics System (OBD-II). This OBD-II system protects the
environment by ensuring that your vehicle continues to meet
government emission standards. The OBD-II system also assists the
service technician in properly servicing your vehicle. When theCheck
engine/Service engine soonlight illuminates, the OBD-II system has
detected a malfunction. Temporary malfunctions may cause yourCheck
engine/Service engine soonlight to illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been securely tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel and/or properly tightening the fuel cap. After three
driving cycles without these or any other temporary malfunctions
present, theCheck engine/Service engine soonlight should turn off. (A
driving cycle consists of a cold engine startup followed by mixed
city/highway driving.) No additional vehicle service is required.
If theCheck engine/Service engine soonlight remains on, have your
vehicle serviced at the first available opportunity.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If yourCheck engine/Service engine
soonlight is on, refer to the description in theWarning lights and
chimessection of theInstrument Clusterchapter. Your vehicle may not
pass the I/M test with theCheck engine/Service engine soonlight on.
If the vehicle’s powertrain system or its battery has just been serviced, the
on-board diagnostics system is reset to a“not ready for I/M test”condition.
To ready the on-board diagnostics system for I/M testing, a minimum of 30
minutes of city and highway driving is necessary as described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
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FluidFord Part
NameApplication Capacity
Engine oil
(includes filter
change)-Gas
engines
6
Motorcraft SAE
5W-20 Premium
Synthetic Blend
Motor Oil (US)
Motorcraft SAE
5W-20 Super
Premium Motor
Oil (Canada)5.4L V8 and
6.8L V10
engines5.7L (6.0
quarts)
Engine oil
(includes filter
change)-Diesel
engineRefer to your 6.0L Diesel Supplement
Fuel tank N/A Mid-ship tank
(optional on
Chassis Cab)71.9L (19.0
gallons)
Right side
saddle mounted
tank (optional
on Chassis Cab)87.1L (23.0
gallons)
Short box 109.8L (29.0
gallons)
Long box 143.9L (38.0
gallons)
Aft axle 151.4L (40.0
gallons)
Power steering
fluidMotorcraft
MERCONAT FAll Fill to FULL
COLD range on
dipstick
Transfer case
fluidMotorcraft
MERCONAT F4x4 vehicles 1.9L (2.0
quarts)
Manual
transmission
fluidMotorcraft
MERCONAT F6-speed manual 5.5L (5.8
quarts)
4
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filter, specifications ........241, 283
recommendations ...................241
refill capacities ........................284
specifications ..................287, 291
Exhaust fumes ..........................129
F
Fail safe cooling ........................248
Fluid capacities .........................284
Foglamps .....................................42
Four-Wheel Drive vehicles .......144
description ..............................149
driving off road .......................151
electronic shift ................145, 149
indicator light .........................146
lever operated shift ................146
manual locking hubs ..............144
preparing to drive your
vehicle .....................................132
Fuel ............................................250
calculating fuel economy .......254
cap ...........................................252
capacity ...................................284
choosing the right fuel ...........252
comparisons with EPA fuel
economy estimates .................257
detergent in fuel .....................254
filling your vehicle with
fuel ...........................250, 252, 254
filter, specifications ........254, 283
fuel pump shut-off switch .....193
improving fuel economy ........254
octane rating ...................253, 291
quality ......................................253
running out of fuel .................254
safety information relating to
automotive fuels .....................250
Fuel pump shut-off switch .......193
Fuses ..................................194–195G
Garage door opener ....................55
Garage Door Opener
(see Homelink wireless control
system) ........................................64
Gas cap (see Fuel cap) ............252
Gas mileage
(see Fuel economy) .................254
Gauges .........................................16
transmission fluid
temperature gauge ...................20
GAWR (Gross Axle Weight
Rating)
calculating ...............................164
GVWR (Gross Vehicle Weight
Rating)
calculating ...............................164
H
Hazard flashers .........................193
Head restraints ...........................85
Headlamps ...................................41
aiming ........................................43
autolamp system .......................41
daytime running lights .............42
flash to pass ..............................43
high beam .................................43
replacing bulbs ...................46–47
turning on and off ....................41
Heating
heating and air conditioning
system .................................38–39
Homelink wireless control
system ..........................................64
Hood ..........................................237
I
Ignition ...............................125, 291
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