tow FORD E SERIES 2004 4.G Natural Gas Vehicle Supplement Manual

indication that refueling is nearly complete. Also, the station compression
equipment may turn on at any time during the refueling process.
FUEL QUALITY
Do not use liquefied natural gas (LNG) or a CNG that is derived
from a process such as flashing (heating LNG). Failure to use the
correct type of fuel may cause damage to the engine and fuel
system components.
Use only a CNG fuel that meets the specification of NFPA-52 and SAE
J1616 in your NGV. Specifications NFPA-52 and SAE J1616 place limits
on particulate contamination, oil contamination and moisture content to
ensure a quality CNG fuel.
The use of a CNG fuel that does not meet specifications NFPA-52 and
SAE J1616 isnot recommended and may cause engine damage.
Use of poor quality CNG fuel may result in:
• component failure.
• leakage from the fueling point.
• poor vehicle operation.
Use of poor quality fuel may also result in your warranty being
invalidated.
Icing while fueling your vehicle
An icing condition may occur after fueling your vehicle. This may be due
to changes in fuel moisture content, quite often seen during change of
seasons. This condition causes your vehicle ’s fuel fill valve to remain
slightly open, allowing some natural gas to be released.
Breathing hydrocarbon gases (CNG) or air which lacks oxygen
due to the presence of hydrocarbon gases can result in
headache, dizziness and weakness in the arms and legs. In the event of
illness due to inhaling hydrocarbon gases, immediately move the victim
to fresh air and contact medical emergency personnel.
The icing condition may be observed when disconnecting the fuel
dispenser ’s fill nozzle from your vehicle. You may notice more gas than
normal venting from the vehicle fill valve through the vent hose to the
dispenser. If this occurs, keep the fill nozzle connected (or reconnect it)
and wait about 30 seconds. This will allow the ice to melt. Repeat this
procedure as necessary. When normal fuel venting occurs, remove the fill
nozzle and stow it as instructed on the dispenser.
Do not fuel your vehicle with the ignition in the ON position; doing so
may increase the amount of fuel venting during this icing condition.
Servicing your vehicle
11

Crown Victoria (3600 psi)
Fueling method Standard tanks With extended range
system
1
Slow-fill 45.0L (11.9 gallons) 59.1L (15.6 gallons)
Fast-fill 38.2L (10.1 gallons) 50.3L (13.3 gallons)
1Police and Taxi vehicles.
Extended range fuel system
Crown Victoria Police and Taxi vehicles with the extended range fuel
system have a 5–passenger seating configuration with one additional
CNG fuel tank mounted in the luggage compartment.
E-Series vehicles with the extended range fuel system have one
additional CNG fuel tank mounted in the cargo area behind the rear seat.
TRAILER TOWING
On F-150 Heritage models, your NGV has the capability for towing up to
2,267 kg (5,000 lbs.) using the factory installed step-bumper. It is
recommended that the vehicleNOTbe modified for towing (i.e.-any
frame-mounted hitches).
Crown Victoria and E-Series Van/Wagon and Cutaway models are not
equipped with a trailer towing option. It is recommended that the vehicle
NOTbe modified for towing.
TOWING YOUR CNG VEHICLE
Refer to your Owner’s Guide for towing procedure except E-Series
vehicles with the optional tank package whichMUSTbe flat-bed towed.
NGV REFUELING STATIONS
To obtain a directory of all the refueling stations in the United States,
contact the American Gas Association (AGA) at (703) 841–8400 or the
national website: www.afdc.doe.gov/refueling.html. In Canada, contact
Union Gas at 1–800–265–5277.
SERVICING YOUR VEHICLE
The following is a brief description of unique maintenance items for your
NGV. For a complete list of maintenance items and intervals, refer to
yourService Guide.
Tank inspection and replacement
For your protection, the CNG fuel tanks require visual inspection every
three years or 58,000 kilometers (36,000 miles) whichever comes first.
Servicing your vehicle
15