2003 FORD EXCURSION octane

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.
Do not use fuel containing methanol. It can damage critical fuel system
components.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based compounds containing MMT.
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” that
are sold with octane ratings of 86 or lower in high altitude areas.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of “Regular” unleaded
gasoline. “Premium” unleaded gasoline is not recommended (particularly
87(R+M)/2 METHOD
Maintenance and Specifications
206

in the United States) because it may cause these problems to become
more pronounced. If the problems persist, see your dealer or a qualified
service technician.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
Many of the world’s automakers
issued the World-wide Fuel Charter
that recommends gasoline
specifications to provide improved
performance and emission control
system protection for your vehicle.
Gasolines that meet the World-wide
Fuel Charter should be used when
available. Ask your fuel supplier
about gasolines that meet the
World-wide Fuel Charter. In Canada,
look for fuels that display theAuto Makers’ Choice
logo.
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.
•Your “Service Engine Soon” indicator may come on. For more
information on the “Service Engine Soon” indicator, 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.
Maintenance and Specifications
207

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.
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.
Maintenance and Specifications
208

1Add 236 ml (8 oz.) of Additive Friction Modifier XL-3 or equivalent
meeting Ford specification EST-M2C118-A for complete refill of
Traction-Lok axles. Ford design rear axles contain a synthetic lubricant
that does not require changing unless the axle has been submerged in
water.
2Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick or on the dipstick
handle. Check the container to verify the fluid being added is of the
correct type. Refer to your scheduled maintenance guide to determine
the correct service interval.
Some transmission fluids may be labeled as dual usage, such as
MERCONand MERCONV. These dual usage fluids are not to be used
in an automatic transmission that requires use of the MERCONtype
fluid. However, these dual usage fluids may be used in transmissions that
require the MERCONV type fluid.
MERCONand MERCONV type fluids are not interchangeable.
DO NOT mix MERCONand MERCONV. Use of a transmission
fluid that indicates dual usage (MERCONand MERCONV) in
an automatic transmission application requiring MERCONmay
cause transmission damage. Use of any fluid other than the
recommended fluid may cause transmission damage.
ENGINE DATA
Engine* 5.4L V8 engine 6.8L V10 engine
Cubic inches 330 415
Required fuel 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Spark plug gap1.3-1.4 mm
(0.052-0.056 inch)1.3-1.4 mm
(0.052-0.056 inch)
Ignition system Coil on plug Coil on plug
Compression ratio 9.0:1 9.0:1
*Refer to the7.3 Liter Power Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplementfor diesel engine information.
Maintenance and Specifications
227

Exhaust fumes ..........................127
F
Fail safe cooling ........................202
Fluid capacities .........................222
Foglamps .....................................46
Four-Wheel Drive vehicles .......136
driving off road .......................138
electronic shift ................137–138
indicator light .........................136
manual locking hubs ..............137
preparing to drive your
vehicle .....................................130
Fuel ............................................203
calculating fuel economy .......208
cap ...........................................205
capacity ...................................222
choosing the right fuel ...........206
comparisons with EPA fuel
economy estimates .................211
detergent in fuel .....................207
filling your vehicle
with fuel ..................203, 205, 208
filter, specifications ........207, 222
fuel pump shut-off switch .....155
improving fuel economy ........208
octane rating ...........206, 227–228
quality ......................................206
running out of fuel .................207
safety information relating to
automotive fuels .....................203
Fuses ..................................156–157
G
Garage door opener ..............56, 68
Gas cap (see Fuel cap) ............205Gas mileage (see
Fuel economy) ..........................208
Gauges .........................................13
GAWR (Gross Axle
Weight Rating) ..........................147
calculating ...............................149
definition .................................147
driving with a heavy load ......147
location ....................................147
GVWR (Gross Vehicle
Weight Rating) ..........................147
calculating .......................147, 149
definition .................................147
driving with a heavy load ......147
location ....................................147
H
Head restraints ...........................91
Headlamps ...................................45
aiming ........................................47
autolamp system .......................45
bulb specifications ....................49
daytime running lights .............46
flash to pass ..............................47
high beam .................................46
replacing bulbs .........................50
turning on and off ....................45
Heating
heater only system ...................43
heating and air conditioning
system .................................40–41
HomeLink universal
transceiver (see
Garage door opener) ......68–69, 71
Hood ..........................................190
I
Ignition .......................124, 227–228
Index
237

Infant seats
(see Safety seats) .....................116
Inspection/maintenance
(I/M) testing ..............................212
Instrument panel
cleaning ...................................185
cluster ........................................10
lighting up panel and
interior .......................................47
J
Jack ............................................161
positioning ...............................161
storage .....................................161
Jump-starting your vehicle ......166
K
Keyless entry system .................80
Keys
positions of the ignition .........124
L
Lamps
autolamp system .......................45
bulb replacement
specifications chart ..................49
cargo lamps ...............................47
daytime running light ...............46
fog lamps ...................................46
headlamps .................................45
headlamps, flash to pass ..........47
instrument panel, dimming .....47
interior lamps .....................48–50
replacing bulbs ....... 49–50, 52–53
Lane change indicator
(see Turn signal) ........................47Liftgate ........................................72
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........128
speed control ............................64
Load limits .................................147
GAWR ......................................147
GVWR ......................................147
trailer towing ..........................147
Loading instructions .................148
Locks
childproof ..................................76
doors ..........................................75
Lubricant specifications ...225, 227
Lumbar support, seats .........88–89
M
Manual transmission
fluid capacities ........................222
lubricant specifications ..........227
Message center ...........................65
english/metric button ...............65
menu button .............................65
Mirrors ...................................55, 59
automatic dimming rearview
mirror ........................................59
fold away ...................................61
heated ........................................60
side view mirrors (power) .......60
Motorcraft parts ................207, 222
O
Octane rating ............................206
Oil (see Engine oil) ..................192
P
Parking brake ............................129
Index
238