(5) Tighten fuel rail bolts to 14 N·m (124 in. lbs.)
(Fig. 19)
CAUTION: When tightening fuel injection line union
nuts, counter hold with a wrench at the thread con-
nection. ON NO ACCOUNT exceed the tightening
torque at any time.
(6) Tighten the pr essu re line to the fuel ra il to 20
N·m (177 in. lbs.).
(7) Tighten th e high pressur e fuel lin es a t the fu el
rail to 22 N·m (195 in. lbs.).
(8) Reconnect engine harness electrical connectors.
(9) Connect the inta ke manifold air inlet duct.
(10) Connect n egat ive batt ery cable.
CAUTION: Care must be taken when installing the
engine cover. Assure the proper routing of the fuel
injector return fuel hose to the banjo bolt fitting in
the left rear corner of the cover. Failure to do so
may pinch or damage the hose causing fuel leakage
or a driveability concern.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH FAN. DO NOT PUT YOUR
HANDS NEAR PULLEYS, BELTS OR FAN. DO NOT
WEAR LOOSE CLOTHING.
(11) St art engine, ru n for a few min utes, tu rn the
engine off and inspect for leaks (Refer to 14 - F UEL
SYSTEM - WARNING).
FU EL TANK
DESCRIPTION
The plastic fuel tank (Fig. 20) is mounted to the
frame rails u nder the left/cent er side of the vehicle.
The fuel t ank cont ains a ser viceable fu el pump mod-
ule with an electric fuel pu mp, and a fuel level send-
ing unit. Th e tank is also equipped with 2 fuel lin es:
a fu el supply line t o the fu el pump, and a separa te
fuel retu rn line.
Fuel Temperature Control: A section of the fu el
retu rn line is coiled at the rear section of th e tank
(Fig. 21). This coiled section i s used to help drop the
temper ature of fuel retur ning to the tank. A thermo-
st at (pr eheating valve) (3) (Fig. 21) is used to keep
fuel temper ature below 167 degrees F. If fuel tem per-
ature is above 167 degrees F, fu el pa sses fir st
through the coiled cooler lin es, and th en into the fu el
tank. If fuel tempera ture is below 150 degr ees F, fuel
bypasses the coiled cooler lines, and is r etur ned
direct ly into the fu el tank.
An electric fuel pum p (more com monly r eferred to
in diesel applica tions as a fuel tra nsfer pu mp or fuel
lift pu mp) is att ached t o the fuel pump m odu le. This
module (Fig. 22) is located in th e fuel ta nk. Refer to
Fuel Pump Module for additional informat ion.
VA FUEL DELIVERY 14 - 23
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