Ford 2007 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 278)

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. On restarting, cranking time will take a few seconds longer

than normal.

• Normally, adding one gallon of fuel is enough to restart the engine. If

the vehicle is out of fuel and on a steep grade, more than one gallon

may be required.

• The Service engine soon indicator (

) may come on. For more

information on the Service engine soon indicator, refer to the

Instrument Cluster chapter.

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 1,000 miles (1,600 km)

of driving (engine break-in period). You will get a more accurate

measurement after 2,000 miles-3,000 miles (3,000 km–5,000 km).

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 the Maintenance

Product Specifications and 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.

2007 F-250/350/450/550 (f23)

Owners Guide (post-2002-fmt)

USA (fus)

Maintenance and Specifications

278

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Ford 2007 F-550 v.2 Manuel d'utilisateur Page 278

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