Chevrolet 2013 Duramax Diesel, Руководство пользователя, Страница: 55 / 132

Black plate (31,1)
Chevrolet/GMC DURAMAX Diesel Supplement - 2013 - crc - 8/10/12
Driving and Operating 9-31
Fuel Priming
In order for the fuel system to work
properly, the fuel lines must be full
of fuel and contain no air. If air gets
into the fuel lines, it will be
necessary to prime the fuel lines to
eliminate air before operating the
vehicle and the fuel operated
heater (FOH).
If air is in the fuel lines, one of the
following may have happened:
. The vehicle ran out of fuel.
. The fuel filter was removed for
servicing or replacement.
.
The fuel lines were removed or
disconnected for servicing.
.
The fuel filter water drain valve
was opened while the engine
was running.
. The fuel operated heater (FOH)
pump and FOH fuel lines were
removed or disconnected for
servicing.
If one or more of the above occur, it
is very likely that air has entered the
fuel system and priming the fuel
system is needed before operating
the vehicle. Air in the fuel lines does
not harm the engine, the FOH,
or the vehicle.
However, the engine and/or the
FOH may not be able to start until
the fuel system is primed and the air
is removed.
To Prime the Vehicle (Pickup
Models)
The vehicle is equipped with a
priming pump which is part of the
engine mounted fuel filter. The
priming pump is hand operated and
is designed to bring fuel to the
engine to eliminate any air in the
fuel lines. To prime the engine:
1. Correct the condition that
caused the loss of prime by
making sure there is fuel in
the tank.
2. Make sure the fuel filter has
been installed and properly
tightened.
3. Make sure the fuel lines are
properly connected and the fuel
filter is cool enough to touch.
4. Remove any dirt from the fuel
filter head and vent valve by
wiping with a cloth.
5. Open the fuel filter vent valve by
turning the screw
counterclockwise several full
turns. The vent valve is located
on top of the fuel filter housing.