2001 Ford F250 7.3L Diesel Supplement 2nd Printing - Page 10

2001 Ford F250 Manual

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Starting 5. After the engine starts, allow it to idle for about 15 seconds. (Do not increase engine speed until the oil pressure gauge indicates normal pressure.) STOPPING THE ENGINE Turn the ignition to OFF. To prolong engine life (after extended high speed or maximum GVW operation), it is recommended that a hot engine be allowed to operate at low idle for about 7-10 minutes which would allow sufficient time for the turbocharged engine to cool down. COLD WEATHER OPERATION Changing to a lighter grade engine oil also makes starting easier under these conditions. Refer to "Engine Oil Specifications" in the General maintenance information chapter. At temperatures below -7°C (20°F), Number 2-D diesel fuel may thicken enough to clog the fuel filter. Your engine is equipped with a fuel filter/heater/water/separator to keep the wax melted which will help prevent fuel filter clogging. However, if the engine starts but stalls after a short time and will not restart, the fuel filter may be clogged. For best results in cold weather, use Number 1-D diesel fuel or "winterized" Number 2-D diesel fuel which has an additive to minimize wax formation. Your vehicle is also equipped with a bypass relief valve, located on the in-tank fuel sending unit, which provides fuel flow to the engine if the fuel pickup should become plugged by ice or wax. To allow this bypass valve to function and avoid engine fuel starvation, it is recommended that, during cold weather operation 0°C (32°F) or below, the fuel level in your tank should not be allowed to drop below 1/4 full. This will help prevent air from entering the fuel system and stalling the engine. In cold weather below 0°C (32°F) your diesel engine will slowly increase to a higher idle speed if left idling in P (Park). The sound of the engine may change also, as an exhaust device engages to improve heater performance and reduce exhaust smoke. Operation in snow Vehicle operation in heavy snowfall or in dry loose snow that may swirl around the front of the vehicle may feed excessive amounts of snow into the air intake system. This could plug the air cleaner with snow and cause the engine to stall. 10

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5. After the engine starts, allow it to idle for about 15 seconds. (Do not
increase engine speed until the oil pressure gauge indicates normal
pressure.)
STOPPING THE ENGINE
Turn the ignition to OFF. To prolong engine life (after extended high
speed or maximum GVW operation), it is recommended that a hot engine
be allowed to operate at low idle for about 7–10 minutes which would
allow sufficient time for the turbocharged engine to cool down.
COLD WEATHER OPERATION
Changing to a lighter grade engine oil also makes starting easier under
these conditions. Refer to “Engine Oil Specifications” in the
General
maintenance information
chapter.
At temperatures below –7°C (20°F), Number 2–D diesel fuel may thicken
enough to clog the fuel filter. Your engine is equipped with a fuel
filter/heater/water/separator to keep the wax melted which will help
prevent fuel filter clogging. However, if the engine starts but stalls after a
short time and will not restart, the fuel filter may be clogged. For best
results in cold weather, use Number 1–D diesel fuel or “winterized”
Number 2–D diesel fuel which has an additive to minimize wax
formation.
Your vehicle is also equipped with a bypass relief valve, located on the
in-tank fuel sending unit, which provides fuel flow to the engine if the
fuel pickup should become plugged by ice or wax. To allow this bypass
valve to function and avoid engine fuel starvation, it is recommended
that, during cold weather operation 0°C (32°F) or below, the fuel level in
your tank should not be allowed to drop below 1/4 full. This will help
prevent air from entering the fuel system and stalling the engine.
In cold weather below 0°C (32°F) your diesel engine will slowly increase
to a higher idle speed if left idling in P (Park). The sound of the engine
may change also, as an exhaust device engages to improve heater
performance and reduce exhaust smoke.
Operation in snow
Vehicle operation in heavy snowfall or in dry loose snow that may swirl
around the front of the vehicle may feed excessive amounts of snow into
the air intake system. This could plug the air cleaner with snow and
cause the engine to stall.
Starting
10