2012 Ford F550 Cab Diesel Supplement 3rd Printing - Page 40

2012 Ford F550 Cab Manual

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Maintenance and Specifications LOW FUEL PRESSURE MESSAGE The engine is equipped with a low fuel pressure detection system. If the message center displays: LOW FUEL PRESSURE the following explains why and what to do: • Cold start or cold operation (below 32°F (0°C): If this message appears during a cold start or during cold operation up to 10 minutes after the initial cold start, monitor the message center. If it disappears and does not re-appear after the engine has fully warmed up, the low fuel pressure message is most likely caused by waxed or gelled fuel. Do not use alcohol based additives to correct fuel gelling. This may result in damage to the fuel injectors/systems. Use an anti-gel additive as listed in Maintenance product specifications and capacities section in this chapter. The customer warranty may be void from using additives that do not meet or exceed Ford specifications. If the low fuel pressure message persistently appears after re-fueling during the cold start and cold operation conditions defined previously and then disappear when the engine has fully warmed up, consider different fuel sources. • Low fuel operation: If the message appears when the vehicle is warm and during low fuel tank level operation, i.e. the tank level is at or very near empty, refuel the vehicle and operate the vehicle. If the message reappears after fueling, see below. If the message does not come back, the low fuel pressure condition was due to low fuel levels in the fuel tank. • Normal operation: If the message appears during normal operation when the vehicle / engine is fully warm, and fuel level is not low, the fuel filters must be changed regardless of the maintenance schedule interval. • If replacement of the fuel filter does not remedy the low fuel pressure message during normal operation as defined above, take the vehicle to your authorized dealer. 40 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)

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LOW FUEL PRESSURE MESSAGE
The engine is equipped with a low fuel pressure detection system. If the
message center displays:
LOW FUEL PRESSURE
the following
explains why and what to do:
•
Cold start or cold operation (below 32°F (0°C): If this message
appears during a cold start or during cold operation up to 10 minutes
after the initial cold start, monitor the message center. If it disappears
and does not re-appear after the engine has fully warmed up, the low
fuel pressure message is most likely caused by waxed or gelled fuel.
Do not use alcohol based additives to correct fuel gelling. This may
result in damage to the fuel injectors/systems. Use an anti-gel additive
as listed in
Maintenance product specifications and capacities
section in this chapter. The customer warranty may be void from using
additives that do not meet or exceed Ford specifications.
If the low fuel pressure message persistently appears after re-fueling
during the cold start and cold operation conditions defined previously
and then disappear when the engine has fully warmed up, consider
different fuel sources.
•
Low fuel operation: If the message appears when the vehicle is warm
and during low fuel tank level operation, i.e. the tank level is at or
very near empty, refuel the vehicle and operate the vehicle. If the
message reappears after fueling, see below. If the message does not
come back, the low fuel pressure condition was due to low fuel levels
in the fuel tank.
•
Normal operation: If the message appears during normal operation
when the vehicle / engine is fully warm, and fuel level is not low, the
fuel filters must be changed regardless of the maintenance schedule
interval.
•
If replacement of the fuel filter does not remedy the low fuel pressure
message during normal operation as defined above, take the vehicle to
your authorized dealer.
Maintenance and Specifications
40
2012 Diesel
(67l)
Supplement, 3rd Printing
USA
(fus)