Dodge Nitro. Manual — part 666

SEPARATOR-FUEL FILTER/WATER

DESCRIPTION

FUEL FILTER/WATER SEPARATOR

The fuel filter/water separator assembly (8) is located on the left-rear side of the engine compartment. The
assembly includes the fuel filter (7), fuel heater (1), fuel temperature sensor (5), combination water drain
valve/Water-In-Fuel (WIF) sensor (6), and a quick-connect fittings attached at the side of the fuel filter canister.

at High Pressure Pump

28

20

247

Fuel Injector Fuel Lines

at Fuel Rail

5

-

44

PLUS 75° TURN

High Pressure Fuel Feed

Line at Fuel Rail

5

-

44

PLUS 75° TURN

Fuel Injector Lines at the

Fuel Injectors

28

20

247

Fuel Rail Bolts

24.5

18

-

Fuel Pressure Sensor

35

26

-

Water In Fuel Sensor

1.2

-

10

Fuel Water/Separator

Mounting Nuts

24.5

24

-

Fuel Line Hose Clamp

14.7

11

62

Fuel Quantity Solenoid

11

-

97

Fuel Tank Bolts

61

45

-

Fuel Filler Tube Clamp

3.5

-

30

APP Sensor

11

-

97

Fuel Pressure Solenoid

Mounting Nut

Refer to INSTALLATION Procedure.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

Fig. 42: Fuel Filter/Water Separator Components
Courtesy of CHRYSLER LLC

OPERATION

FUEL FILTER/WATER SEPARATOR

The fuel filter/water separator protects the fuel injection pump by removing water and contaminants from the
fuel. The construction of the filter/separator allows fuel to pass through it, but helps prevent moisture (water)
from doing so. Moisture collects at the bottom of the filter.

Refer to the maintenance schedules in the owners manual for the recommended fuel filter replacement intervals.

For draining of water from canister, refer to Fuel Filter/Water Separator Removal/Installation.

A Water-In-Fuel (WIF) sensor is attached to the bottom of fuel filter element.

The fuel heater and fuel temperature sensor are installed into the side of the filter/separator housing.

REMOVAL

FUEL FILTER/WATER SEPARATOR

Refer to maintenance schedules, or the Owner's Manual for recommended fuel filter replacement intervals.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

Fig. 43: Fuel Filter/Water Separator Components
Courtesy of CHRYSLER LLC

DRAINING WATER FROM FUEL FILTER CANISTER:

The combination housing drain valve/WIF sensor (6) serves two purposes. One is to partially drain the filter
housing of excess water. The other is to partially drain the housing for fuel temperature sensor, fuel filter or
fuel heater element replacement.

The filter housing should be partially drained whenever the water-in-fuel warning lamp remains illuminated.
(Note that lamp will be illuminated for approximately two seconds when ignition key is initially placed in ON
position for a bulb check).

1. A nipple is located at the bottom of drain valve (6). Attach a drain hose to this nipple. Place drain pan

under drain hose.

2. With engine not running, Disconnect WIF sensor electrical connector (4) then rotate drain valve (6)

approximately two revolutions to open it. Leave open until all water and contaminants have been
removed and clean fuel exits. Hand tighten drain valve after tightening.

3. If fuel heater element is being replaced, drain housing completely. Dispose of mixture in drain pan

according to applicable regulations.

4. After draining operation, close and tighten drain valve (6).

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

Fig. 44: Fuel Filter/Water Separator Components
Courtesy of CHRYSLER LLC

5. FUEL FILTER REPLACEMENT:

6. Clean all debris from around filter canister (7) and canister head.

7. Open drain valve (6) two complete revolutions. Drain approximately 1 cup of fuel into a waste canister.

Dispose of fuel according to environmental regulations.

8. Remove drain hose from drain valve (6).

9. Use an oil filter type wrench to loosen filter (7). Continue removing filter by hand.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro