1997 FORD F250 fuel pressure

162
*
[GF14850(F )01/96]
When you come to a stop, do not downshift
through each gear. Disengage the clutch and use
the brake as necessary. Downshifting through
the gears decreases your vehicle's fuel economy.
*
[GF14900(F )01/96]
RWARNING
Continued use of a damaged or worn
clutch, prolonged clutch slippage or
downshifting at excessive speeds can
result in a failure of the engine,
transmission or clutch components.
*
[GF14950(F )01/96]
Transmission Function
[GF15000(F )04/96]
Upshift at the speeds specified in the chart
available for your engine and transmission. All
forward gears are synchronized allowing you to
shift into them with your vehicle in motion. The
clutch pedal should be fully depressed when
shifting.
*
[GF15050(F )03/96]
NOTE: Shifting during extremely low RPMs
can result in a momentary audible
rattle which disappears as vehicle
RPMs are increased. Shifting at higher
speeds will eliminate this sound.
*
[GF15100(F )01/96]
Parking
*
[GF15150(F )01/96]
To park your vehicle, apply the service brake
pedal, and shift into N (Neutral) while still
maintaining pressure on the service brake. Set
the parking brake fully. Shift into first and turn
off the ignition.
*
[GF15200(F )01/96]
RWARNING
Do not park your vehicle in Neutral, it
may move unexpectedly and injure
someone. Use 1 (First) gear and set the
parking brake fully.
File:09ltgff.ex
Update:Thu May 30 15:25:49 1996
ProCarManuals.com

183
*
[GF21090(FM)01/96]
Passenger car type tires when installed on light
trucks and multipurpose passenger vehicles are
rated at 10% lower load carrying capacity due to
the differences in vehicle usages.
*
[GF21100(F )01/96]
The vehicle must not be loaded to both the front
and rear GAWR because the GVWR will be
exceeded. The GAWR of the front and rear axles
exceeds the GVWR when added together to
allow flexibility in fore and aft loading of cargo.
*
[GF21110(FM)03/96]
With the tires inflated to the specified pressure,
the total weight of your vehicle must not exceed
the GVWR and GAWR specified on the Safety
Compliance Certification Label. This includes full
fuel tank(s), vehicle equipment, and occupants as
well as the cargo load.
*
[GF21120(FM)01/96]
GCWR (Gross Combined Weight Rating)
*
[GF21130(FM)01/96]
GCWR is the maximum combined weight of the
towing vehicle (including passengers and cargo)
and the loaded trailer. The GCWR is specified
by the manufacturer to indicate the combined
maximum loaded weight that the vehicle is
designed to tow.
*
[GF21140(FM)01/96]
Maximum Trailer Weight Rating
*
[GF21150(FM)01/96]
The maximum trailer weight rating is the
maximum weight of a trailer the vehicle is
permitted to tow. It is specified by the
manufacturer and is determined by subtracting
the vehicle curb weight for each
engine/transmission combination, any required
option weight for trailer towing and the weight
of the driver from the GCWR for the towing
vehicle.
File:09ltgff.ex
Update:Thu May 30 15:25:49 1996
ProCarManuals.com

294 %
*
[MC30100(F )01/96]
Opening the Fuel Filler Door
*
[MC30200(F )01/96]
To open the fuel filler door of your vehicle, just
insert your finger in the divot and pull the door
open all the way.
%*
[MC30400(FM)01/96]
Removing the fuel cap
*
[MC30500(FM)01/96]
The proper instructions for removing the fuel
cap are as follows:
*
[MC30600(FM)01/96]
q
Unscrew the fuel cap by exerting pressure on
the plastic lock bar and rotating the fuel cap
counterclockwise.
*
[MC30700(FM)01/96]
q
Turn the fuel cap 1/2 to 3/4 of a turn until a
hissing sound is heard. When the hissing
sound stops, continue rotating
counterclockwise to remove the fuel cap.
*
[MC30800(FM)01/96]
q
Make sure that you follow the above fuel cap
removal instructions and use caution. Such
caution will minimize the possibility of fuel
spraying during removal of the fuel cap.
*
[MC30900(FM)03/96]
To replace and secure the fuel cap, place it in
position and rotate it clockwise until it clicks
(ratchets). Doing so will not damage or break
the fuel cap. The ratcheting mechanism allows
the fuel cap to be sealed without overtightening.
*
[MC31000(FM)01/96]
If you lose the fuel cap, replace it with an
authorized Motorcraft or equivalent part.
%*
[MC31100(FM)01/96]
RWARNING
If you do not use the proper fuel cap, the
pressure in the fuel tank can damage the
fuel system or cause it to work improperly
in a collision.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

295
*
[MC31200(FM)01/96]
NOTE: If you replace your fuel cap with an
aftermarket fuel filler cap, the customer
warranty may be void for any damage
to the fuel tank and/or fuel system.
*
[MC31300(FM)01/96]
RWARNING
The fuel system may be under pressure. If
the fuel cap is venting vapor or if you
hear a hissing sound, wait until it stops
before completely removing the cap.
*
[MC31400(F )01/96]
A venting fuel tank is not an abnormal
condition. It may be caused by:
*
[MC31500(F )01/96]
q
Too volatile a fuel for the weather conditions.
The service stations sometimes sell winter
grade fuel in the summer.
*
[MC31600(F )01/96]
q
Pulling a heavy load on hot days, or at high
altitudes.
*
[MC31700(F )01/96]
q
Extended periods of idling with the engine
RPM increased above the normal idle range.
*
[MC31800(F )01/96]
q
Parking vehicle in full sunlight for extended
periods on extremely hot days.
%*
[MC32000(FM)01/96]
Choosing the Right Fuel
[MC32100(F )04/96]
NOTE: Read the7.3L Diesel Engine Owner
Guide Supplementfor information
regarding correct fuel requirements for
your diesel-powered vehicle.
*
[MC32200(FM)03/96]
Use only UNLEADED FUEL. Using leaded fuel
is prohibited by federal law and could damage
your vehicle. The damage may not be covered
by your warranty.
*
[MC32250(FM)04/96]
Your vehicle was not designed to use fuel
containing manganese-based additives such as
MMT. Additionally, vehicles certified to
California emission standards (indicated on the
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

299
*
[MC35200(FM)01/96]
If you are taking the medication ªAntabuseº or
other forms of disulfiram for the treatment of
alcoholism, vapor or skin contact with a
gasoline-methanol blend may cause the same
kind of adverse reaction as drinking an alcoholic
beverage. In sensitive individuals, serious
personal injury or sickness could result. Consult
a physician promptly if you experience an
adverse reaction.
*
[MC35300(FM)02/96]
Filling the fuel tank
*
[MC35400(FM)01/96]
RWARNING
Do not overfill the fuel tank. The pressure
in an overfilled tank may cause leakage
and lead to fuel spray and fire.
*
[MC35500(FM)01/96]
To fill the fuel tank properly:
*
[MC35600(FM)01/96]
NOTE: Extinguish all lit cigarettes, other
smoking materials, and any open
flames before fueling your vehicle.
*
[MC35700(FM)01/96]
1. Remove the fuel cap by following the
instructions above underRemoving the Fuel
Capin this chapter. Proceed to add fuel to
the tank only if your vehicle is on level
ground.
*
[MC35800(FM)01/96]
2. Make sure that you pump unleaded fuel and
put the nozzle all the way inside the fuel
filler pipe.
*
[MC35900(FM)01/96]
NOTE: If you spill any fuel on the body of
your vehicle, clean it off immediately.
The fuel may dull or soften the paint
if you do not wash it off.
%*
[MC36000(FM)03/96]
3. Replace the fuel cap completely when you
are finished. Turn it clockwise 1/4 turn until
it is tight. It will click when it is fully
tightened.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

303
*
[MC39175(FM)01/96]
RWARNING
Do not park, idle, or drive your vehicle in
dry grass or other dry ground cover. The
emission system heats up the engine
compartment and exhaust system, which
can start a fire.
*
[MC39200(F )01/96]
RWARNING
On vehicles without original equipment
floor covering or insulation, do not let
passengers ride in your truck in a manner
that allows contact between skin and the
metal floor.
*
[MC39225(FM)01/96]
If other than Ford or Motorcraft or Ford
authorized remanufactured parts are used for
maintenance, replacement, or for the service of
components affecting emissions control, the
owner should be assured that such parts are
warranted by their manufacturer to be
equivalent to genuine Ford Motor Company
parts in performance and durability. Please
consult your warranty information booklet for
complete warranty information.
*
[MC39250(F )01/96]
Watch for fluid leaks, strange odors, smoke, loss
of oil pressure, the charge warning light, the
check engine light, or the temperature warning
light. These sometimes indicate that the emission
system is not working properly.
*
[MC39275(FM)01/96]
Do not make any unauthorized changes to your
vehicle or engine. Changes that cause more
unburned fuel to reach the exhaust system can
increase the temperature of the engine or
exhaust system.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

315
*
[MC51700(F )01/96]
NOTE: Before using any cleaner, test it on a
small, hidden area of fabric. If the
fabric's color or texture is adversely
affected by a particular cleaner, do not
use it.
*
[MC51800(F )01/96]
Cleaning the Engine
*
[MC51900(F )01/96]
A clean engine is more efficient because a
buildup of grease and dirt acts as an insulator,
keeping the engine warmer than usual.
*
[MC52000(F )01/96]
q
Extreme care must be used if a power washer
is used to clean the engine. The high pressure
fluid could penetrate sealed parts and
assemblies causing damage or malfunctions.
*
[MC52100(F )04/96]
q
In order to avoid possible cracking of the
engine block or fuel injection pump, do not
spray a hot engine or injection pump with
cold water.
*
[MC52200(F )04/96]
q
The alternator, distributor and air intake must
be covered. Covering these components will
help prevent water damage.
*
[MC52300(F )01/96]
q
Never wash or rinse the engine while it is
running. Water getting into the engine may
cause internal damage.
%*
[MC52400(F )03/96]
Cleaning the Wheels
*
[MC52450(F )03/96]
Wash the wheels with the same detergent you
use to wash your vehicle's body. Do not use
acid-based wheel cleaners, steel wool, abrasives,
fuel, or strong detergents. These substances will
damage protective coatings. Use tar and road oil
remover to remove grease and tar.
*
[MC52500(F )03/96]
NOTE: Before going to a car wash, find out if
the brushes are abrasive.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

376 Index
Fuel filler door...........293±294
override, manual........... 294
remote release............ 293
Fuel filter, specifications......... 317
Fuel gauge................ 21
Fuel pump shut-off switch
engine does not start......... 223
starting after a collision........ 223
Fuel tank selector switch, dual tanks.... 62
Fuse panels, instrument panel....226, 234
Fuses
charts................ 234
checking and replacing......225, 234
circuit breakers............ 235
G
Gas cap (see Fuel cap).......... 293
Gas mileage (see Fuel economy) . . . 295, 300
Gasohol................ 297
Gasoline (see Fuel)............ 293
Gauges, Mechanical
battery voltage gauge.......... 18
charging system gauge......... 18
engine coolant temperature gauge.... 21
engine oil pressure gauge........ 19
fuel gauge............... 21
odometer................ 24
speedometer.............. 23
tachometer............... 24
trip odometer.............. 24
File:ltixf.ex
Update:Tue May 28 08:56:20 1996
ProCarManuals.com