2019 NISSAN TITAN fuel pump

DRAINING WATER
WARNING
To avoid the risk of personal injury or
fire, drain diesel fuel into an approved
container and safely dispose of in ac-
cordance with local environmental
regulations.
CAUTION
Continuing vehicle operation without
properly draining could cause serious
damage to the engine.1. Shut the engine off.
2. Place a large drain pan under the drain
valve
A.
3. Turn the drain valve counterclockwise
1/4 turn to open.
4. Drain the filter sump until clear fuel is visible. If draining the stage 1 fuel filter
housing, drain until fuel reduces to a
trickle.
5. Turn the drain valve clockwise1/4 turn
to close.
FUEL SYSTEM PRIMING
WARNING
The fuel pump, high-pressure fuel lines,
and fuel rail contain very high-pressure
fuel. To reduce the possibility of per-
sonal injury, never loosen any fittings
while the engine is running. NOTE:
∙ It is not necessary to vent air from the
high-pressure fuel system before
starting the engine.
∙ Upon ignition on the electric lif t pump
will run until the fuel system is primed
or 90 seconds, whichever comes first.
Af ter a filter change or running the fuel tank
dry, complete the following: 1. Key ON vehicle for 90 seconds to prime the fuel system. Af ter 90 seconds, crank
the engine for a maximum of 30 sec-
onds or until the engine fires. If it does
not fire, verif y the following.
– Confirm fuel level is not empty.
– Water in fuel drain valve is closed.
– Stage 1 filter housing shell is fully seated on module and stage 2 cap is
properly seated on module.
– Stage 1 shell O-ring and stage 2 cap O-ring are properly installed and not
damaged.
LDI2898

Preventive maintenance is the easiest and
least expensive type of maintenance. Keep
records of regularly scheduled mainte-
nance and follow the maintenance sched-
ule recommendations outlined in the Titan
Owner’s Manual.
Use the correct fuel, lubricating oil, and
coolant in your engine. Blending engine oil
with fuel is prohibited for engines with an
af tertreatment system. For additional in-
formation, refer to the “Capacities and
specifications” section of this manual.
A NISSAN dealership knows your vehicle.
When you require any service or have any
questions, they will be glad to assist you
with the extensive resources available to
them.
DIESEL ENGINE OPERATION
The operation of the diesel engine in your
new vehicle varies from the operation of
traditional gasoline engines found in other
vehicles. Reading this supplement will fa-
miliarize you and other operators of the
vehicle with the unique maintenance and
operating procedures that will prolong the
life of the diesel engine and related sys-
tems.
ENGINE BREAK-IN
RECOMMENDATIONS
∙ Warm up the engine before operating itunder load
∙ Do not operate the engine at idle for extended periods
∙ Prevent engine lugging by selecting the appropriate transmission gear
∙ Monitor the vehicle oil pressure and temperature gauges
∙ Check fluid levels frequently (Oil & Cool- ant)
∙ Vary the throttle position at highway speeds when carrying weight or towing
NOTE:
Extended light or no load operation will
extend the time before the engine
reaches its full efficiency. If the engine is
operated in this manner, reduced fuel
economy and power may be observed.
The aforementioned procedure should be
observed for the first 6,000 miles. The en-
gine run-in is improved by operating the
vehicle under load.
DIESEL FUEL SYSTEM
The diesel engine fuel system is a pressur-
ized two-stage filtration system and con-
sists of: ∙ A frame-mounted primary (stage 1) fuel filter containing water/fuel separator,
electric fuel pump, and water in fuel
drain valve
∙ An engine-mounted secondary (stage 2) fuel filter
∙ A fuel injector for each cylinder (8 total)
∙ A high-pressure fuel pump
∙ A high-pressure fuel rail for each cylin- der bank (2 total)
∙ High-pressure fuel lines from the high- pressure fuel pump to the right bank
fuel rail, right bank fuel rail to the lef t
bank fuel rail, and fuel rails to fuel injec-
tors.
GENERAL INFORMATION
1-2Introduction

∙ Do not attempt to top off the fuel tankaf ter the fuel pump nozzle shuts off
automatically. Continued refueling
may cause fuel overflow, resulting in
fuel spray and possibly a fire.
∙ Use only an original equipment type fuel-filler cap as a replacement. It has
a built-in safety valve needed for
proper operation of the fuel system
and emission control system. An in-
correct cap can result in a serious mal-
function and possible injury. It could
also cause the
Malfunction Indi-
cator Light (MIL) to come on.
∙ Do not use starting fluids with this en- gine. It is equipped with an intake air
heater. The use of starting fluid could
cause an explosion, fire, personal in-
jury, system or engine damage.
∙ Do not fill a portable fuel container in the vehicle or trailer. Static electricity
can cause an explosion of flammable
liquid, vapor or gas in any vehicle or
trailer. To reduce the risk of serious
injury or death when filling portable
fuel containers:
– Always place the container on the ground when filling. – Do not use electronic devices when
filling.
– Keep the pump nozzle in contact with the container while you are
filling it.
– Use only approved portable fuel containers for flammable liquid.
CAUTION
∙ For additional information, refer tothe “Malfunction Indicator Light (MIL)”
in the “Instruments and Controls” sec-
tion of the Titan Owner’s Manual.
∙ If fuel or Diesel Exhaust Fluid (DEF) is spilled on the vehicle body, flush it
away with water to avoid paint
damage To remove the diesel fuel-filler cap
A:
1. Turn the fuel-filler cap counterclock- wise to remove.
To install the fuel-filler cap: 1. Insert the fuel-filler cap straight into the fuel-filler tube.
2. Turn the cap clockwise until a single click is heard.
LPD2386
Fuel and Refueling4-3

DIESEL EXHAUST FLUID (DEF) FILL
CAP
CAUTION
∙ Overfilling your DEF tank can causedamage to the tank. ∙ DEF will freeze below 12°F (-11°C); how-
ever, your vehicle is equipped with an
automatic preheating system, which
allows the DEF system to operate be-
low 12°F (-11°C). When the vehicle is not
in operation for an extended period of
time with temperatures at or below
12°F (-11°C), the DEF tank could freeze.
In this condition, adding DEF will not
change the gauge level and added
DEF will not reach the pump, because
it will sit on top of the frozen layer. Move the vehicle to a warm location to
thaw the DEF completely for the
gauge to read accurately and allow
new DEF to reach the pump. If the tank
is overfilled and freezes, it could be
damaged, therefore do not overfill in
sustained cold conditions below 12°F
(-11°C).
∙ Do not put DEF into the fuel tank. This can cause engine damage that is not
covered by your vehicle’s warranty.
∙ Immediately wipe away any DEF that has spilled on painted surfaces with
water and a damp cloth to prevent
damage to the paint.
Outside tempera-
ture sustained at or
below. Amount of DEF to
safely add af ter 25%
warning appears:
–22°F (-30°C) .25 gal
5°F (-15°C) .5 gal
Outside tempera-
ture sustained at or
above Amount of DEF to
safely add af ter 25%
warning appears:
13°F (-10.5°C) Safe to fill the tank
LPD2385LPD2473
DIESEL EXHAUST FLUID (DEF)
4-4Fuel and Refueling

FUEL RECOMMENDATION
Diesel engine
Commercially available diesel fuel is ad-
justed seasonally for cold temperatures.
NISSAN recommends the use of diesel fuel
that has been seasonally adjusted for tem-
peratures below 32°F (0°C)
Diesel fuel of above 42 cetane minimum
above 32°F (0°C); 45 cetane minimum be-
low 32°F (0°C) and with less than 15 ppm of
sulfur must be used.
A cetane number below 42 can cause poor
starting, excessive white smoke, and poor
idling. A cetane number above 55 can in-
crease smoke at peak torque conditions.
If two types of diesel fuel are available, use
summer or winter fuel properly according
to the following temperature conditions.∙ Above 32°F (0°C) . . . Summer type diesel
fuel.
∙ Below 32°F (0°C) . . . Winter type diesel fuel.
If you are in any doubt, it is recommended
that you consult a NISSAN dealer.
CAUTION
∙ Do not use home heating oil, petro- leum, biodiesel (more than 10%) or
other alternate fuels in your diesel en-
gine. The use of those can cause en-
gine damage.
∙ Do not use summer fuel at tempera- tures below 20°F (- 7°C). The cold tem-
peratures will cause wax to form in
the fuel. As a result, it may prevent the
engine from running smoothly.
B10 fuel
B10 fuel is a mixture of approximately 10%
biodiesel and 90% petroleum diesel. Your
vehicle was designed to run on blends of
biodiesel up to B10 (B1-B10). Operating your
vehicle on higher blends is not recom-
mended. Your vehicle’s engine, exhaust
catalyst filter and particulate filter, and fuel
system components may be damaged if
any of these blends are used.
U.S. government regulations require that
biodiesel blends between B6 and B10 are
identified at fuel dispensing pumps by a
label with the common abbreviation or the
appropriate percentage for that region. B6
--B10 blends must meet prescribed quality
standards specified by ASTM D7467.
B10 fuel storage
Biodiesel degrades more quickly than pure
petroleum-based diesel. When storing a
vehicle that runs on a biodiesel blend, it is
important to keep the following in mind:
∙ If storing a vehicle for longer than one month, empty the fuel tank of biodiesel.
∙ To prepare a vehicle to run af ter pro- longed storage, fill the fuel tank with a
pure petroleum-based diesel fuel and
run your vehicle for at least half an hour.
∙ Fuel system seals, plastics and steel parts can be damaged by degraded or
oxidized biodiesel.
During cold weather, biodiesel fuel may
need to be stored in a heated storage tank
in order to prevent it from gelling or solidi-
f ying.
Diesel Exhaust Fluid (DEF)
DEF is a solution composed of urea and
de-ionized water. In diesel vehicles, it is
used as part of the exhaust system to
break down harmful NOx emissions into
nitrogen and water. It is important to keep
your vehicle’s DEF tank filled properly.
Capacities and Specifications8-3