Jeep Wrangler TJ. Manual — part 462
(11) Disconnect 2 injection wiring harness clips at
harness mounting bracket (Fig. 6).
(12) Disconnect electrical connectors at all 4 fuel
injectors. To remove connector refer to (Fig. 7). Push
red colored slider away from injector (1). While push-
ing slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
(13) Remove 2 injection rail mounting bolts (Fig.
4).
(14) Gently rock and pull fuel rail until fuel injec-
tors just start to clear machined holes in intake man-
ifold.
(15) Remove fuel rail (with injectors attached)
from intake manifold.
(16) If fuel injectors are to be removed, refer to
Fuel Injector Removal/Installation.
INSTALLATION - 2.4L
(1) If fuel injectors are to be installed, refer to Fuel
Injector Removal/Installation.
(2) Clean out fuel injector machined bores in
intake manifold.
(3) Apply a small amount of engine oil to each fuel
injector o-ring. This will help in fuel rail installation.
(4) Position fuel rail/fuel injector assembly to
machined injector openings in intake manifold.
(5) Guide each injector into cylinder head. Be care-
ful not to tear injector o-rings.
(6) Push fuel rail down until fuel injectors have
bottomed on shoulders.
(7) Install 2 fuel rail mounting bolts and tighten.
Refer to torque specifications.
(8) Connect electrical connectors at all fuel injec-
tors. To install connector, refer to (Fig. 7). Push con-
nector onto injector (1) and then push and lock red
colored slider (2). Verify connector is locked to injec-
tor by lightly tugging on connector.
(9) Snap 2 injection wiring harness clips (Fig. 6)
into brackets.
(10) Connect 2 main engine harness connectors at
rear of intake manifold (Fig. 5).
(11) Tighten 5 intake manifold mounting bolts.
Refer to Engine Torque Specifications.
(12) Install PCV valve and hose.
(13) Install thermostat and radiator hose. Fill with
coolant. Refer to Cooling.
(14) Connect necessary vacuum lines to throttle
body.
(15) Connect fuel line latch clip and fuel line to
fuel rail. Refer to Quick-Connect Fittings.
(16) Install air duct to throttle body.
(17) Connect battery cable to battery.
(18) Start engine and check for leaks.
Fig. 6 FUEL RAIL MOUNTING - 2.4L
1 - FUEL RAIL
2 - INJECTION HARNESS CLIPS
3 - LOWER MOUNTING HOLES
4 - UPPER MOUNTING HOLES
5 - INTAKE MANIFOLD
Fig. 7 REMOVE/INSTALL INJECTOR CONNECTOR
TJ
FUEL DELIVERY
14 - 7
FUEL RAIL/FUEL DAMPER - 2.4L (Continued)
FUEL RAIL - 4.0L ENGINE
DESCRIPTION - 4.0L
The fuel rail is mounted to the intake manifold
(Fig. 8). It is used to mount the fuel injectors to the
engine. On the 4.0L 6–cylinder engine, a fuel
damper is located near the center of the fuel rail
(Fig. 8).
OPERATION - 4.0L
The fuel injector rail supplies the necessary fuel to
each individual fuel injector.
The fuel damper is used only to help control fuel
pressure pulsations. These pulsations are the result
of the firing of the fuel injectors. It is not used as a
fuel pressure regulator. The fuel pressure regulator is
not mounted to the fuel rail on any engine. It is
located on the fuel tank mounted fuel pump module.
Refer to Fuel Filter/Fuel Pressure Regulator for
information.
The fuel rail is not repairable.
REMOVAL - 4.0L
The fuel damper is not serviced separately.
WARNING: THE FUEL SYSTEM IS UNDER CON-
STANT FUEL PRESSURE EVEN WITH ENGINE OFF.
THIS PRESSURE MUST BE RELEASED BEFORE
SERVICING FUEL RAIL.
(1) Remove fuel tank filler tube cap.
(2) Perform Fuel System Pressure Release Proce-
dure.
(3) Disconnect negative battery cable from battery.
(4) Remove air tube at top of throttle body. Note:
Some engine/vehicles may require removal of air
cleaner ducts at throttle body.
(5) Disconnect electrical connectors at all 6 fuel
injectors. To remove connector refer to (Fig. 9). Push
red colored slider away from injector (1). While push-
ing slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
(6) Disconnect fuel supply line latch clip and fuel
line at fuel rail. Refer to Quick-Connect Fittings.
(7) Disconnect throttle cable at throttle body. Refer
to Throttle Cable Removal/Installation.
(8) Disconnect speed control cable at throttle body
(if equipped). Refer to Speed Control Cable in Speed
Control System.
(9) Disconnect automatic transmission cable at
throttle body (if equipped).
(10) Remove cable routing bracket at intake man-
ifold.
(11) If equipped, remove wiring harnesses at injec-
tion rail studs by removing nuts.
(12) Clean dirt/debris from each fuel injector at
intake manifold.
(13) Remove fuel rail mounting nuts/bolts (Fig.
10).
(14) Remove fuel rail by gently rocking until all
the fuel injectors are out of intake manifold.
INSTALLATION - 4.0L
(1) Clean each injector bore at intake manifold.
(2) Apply a small amount of clean engine oil to
each injector o-ring. This will aid in installation.
(3) Position tips of all fuel injectors into the corre-
sponding injector bore in intake manifold. Seat injec-
tors into manifold.
(4) Install and tighten fuel rail mounting bolts to
11 ±3 N·m (100 ±25 in. lbs.) torque.
(5) If equipped, connect wiring harnesses to injec-
tion rail studs.
(6) Connect electrical connectors at all fuel injec-
tors. To install connector, refer to (Fig. 9). Push con-
Fig. 8 FUEL RAIL/FUEL DAMPER - 4.0L ENGINE
1 - INJ. #1
2 - INJ. #2
3 - INJ. #3
4 - INJ. #4
5 - INJ. #5
6 - INJ. #6
7 - FUEL INJECTOR RAIL
8 - FUEL DAMPER
9 - PRESSURE TEST PORT CAP
10 - MOUNTING BOLTS (4)
11 - QUICK-CONNECT FITTING
14 - 8
FUEL DELIVERY
TJ
nector onto injector (1) and then push and lock red
colored slider (2). Verify connector is locked to injec-
tor by lightly tugging on connector.
(7) Connect fuel line and fuel line latch clip to fuel
rail. Refer Quick-Connect Fittings.
(8) Install protective cap to pressure test port fit-
ting (if equipped).
(9) Install cable routing bracket to intake mani-
fold.
(10) Connect throttle cable at throttle body.
(11) Connect speed control cable at throttle body (if
equipped).
(12) Connect
automatic
transmission
cable
at
throttle body (if equipped).
(13) Install air tube (or duct) at top of throttle
body.
(14) Install fuel tank cap.
(15) Connect negative battery cable to battery.
(16) Start engine and check for fuel leaks.
FUEL TANK
DESCRIPTION
The fuel tank is constructed of a plastic material.
Its main functions are for fuel storage and for place-
ment of the fuel pump module.
OPERATION
All models pass a full 360 degree rollover test
without fuel leakage. To accomplish this, fuel and
vapor flow controls are required for all fuel tank con-
nections.
A fuel tank check valve(s) is mounted into the top
of the fuel tank (or pump module). Refer to Fuel
Tank Check Valve for additional information.
An evaporation control system is connected to the
check valve(s) to reduce emissions of fuel vapors into
the atmosphere. When fuel evaporates from the fuel
tank, vapors pass through vent hoses or tubes to a
charcoal canister where they are temporarily held.
When the engine is running, the vapors are drawn
into the intake manifold. Certain models are also
equipped with a self-diagnosing system using either
a Leak Detection Pump (LDP), or an NVLD pump.
Refer to Emission Control System for additional
information.
Refer to ORVR for On-Board Refueling Vapor
Recovery system information.
Fig. 9 REMOVE/INSTALL FUEL INJECTOR
CONNECTOR
Fig. 10 FUEL RAIL MOUNTING - 4.0L
1 - INJ. #1
2 - INJ. #2
3 - INJ. #3
4 - INJ. #4
5 - INJ. #5
6 - INJ. #6
7 - FUEL INJECTOR RAIL
8 - FUEL DAMPER
9 - PRESSURE TEST PORT CAP
10 - MOUNTING BOLTS (4)
11 - QUICK-CONNECT FITTING
TJ
FUEL DELIVERY
14 - 9
FUEL RAIL - 4.0L ENGINE (Continued)
REMOVAL
This vehicle is equipped with an ORVR (On-Board
Refueling Vapor Recovery) system. Because of this,
the fuel tank may be drained the conventional way
through the filler cap opening.
On this model, the fuel tank is mounted to the
vehicle skid plate. The skid plate is mounted to vehi-
cle body. The tank and skid plate are removed as one
assembly.
(1) Remove fuel filler cap.
(2) Perform the Fuel System Pressure Release Pro-
cedure as described elsewhere in this group.
(3) Disconnect negative battery cable.
(4) Using an approved portable gasoline siphon/
storage tank, drain fuel from tank through filler cap
opening.
(5) Remove 8 screws (4) retaining plastic fuel filler
bezel to body (Fig. 11). Remove plastic fuel filler
bezel (2).
(6) To prevent contaminants from entering tank,
temporarily install fuel cap to fill hoses.
(7) Remove right/rear tire/wheel.
(8) Remove wheelhouse liner at right/rear wheel.
(9) Remove vertical support bracket (2) (Fig. 12) to
gain access to ORVR vapor line.
Fig. 11 FUEL FILL HOSE AT BODY
1 - FILLER HOSE CLAMP
2 - BEZEL
3 - FUEL FILLER CAP
4 - BEZEL SCREWS (8)
5 - FUEL FILLER HOSE
6 - FUEL TANK
Fig. 12 EVAP CANISTER / NVLD PUMP LOCATION
1 - RIGHT / REAR FENDER (WHEELHOUSE)
2 - BRACKET
3 - EVAP CANISTER
Fig. 13 ORVR VAPOR LINE
1 - EVAP CANISTER
2 - NVLD FILTER
3 - NVLD PUMP
4 - VAPOR LINES
5 - FLOW VALVE
6 - TOP OF FUEL TANK)
14 - 10
FUEL DELIVERY
TJ
FUEL TANK (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст