Page 1681 of 2490
Exhaust System - Intermediate Muffler RH4
.0L SC V8 - AJ26
Re
moval and Installation
Remov
al
Installation
1. R
aise the vehicle on a four-post ramp.
2. Raise the rear of the vehicle bo dy and support on two stands,
located under the re ar jacking points.
3. Di
sconnect the intermediate
muffler from the rear muffler.
Sl
acken the securing clamp, re
ar muffler to intermediate
muffler and separate the in termediate muffler from the
rear muffler.
4. R
emove the intermediate muffler.
Sl
acken the securing clamp, front muffler to intermediate
muffler and separate the in termediate muffler from the
front muffler.
5. R
emove the muffler assembly
from the axle carrier and from
the over-axle mounting rubber.
6. Clean and inspect al l exhaust joints.
1. Fit the intermediate muffler assembly.
F
it the muffler assembly to the axle carrier and to the
over-axle mounting rubber.
Page 1682 of 2490
2. Locate the intermediate muffl er to the front muff
ler.
3. Cor r
ectly position the intermedia
te muffler at the front muffler
to align the correct refere nce / index indicator ring.
Tighte
n the clamp, intermediate
muffler to front muffler.
4. NO TE
: If necessary, loosen and rotate the intermediate
muffler, at the front to intermediate muffler joint, to achieve the
tailpipe trim settings. Refer to Specifications in this section.
Correctly position the rear muffler assembly.
Connect the rear muffl
er to the intermediate muffler and
insert to the Nominal indicator ring, rotating back and
forth to aid engagement.
Chec k
that the mounting is located correctly into the
mounting rubber.
Chec k
that the tailpi
pe position is wi thin the specified
settings, adjusting engageme nt within the Maximum and
Minimum indicator rings if necessary. Refer to
Specifications in this section.
5. Tighten the securing clamp, in termediate muffler to rear
muffler.
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6.
R
emove the axle stands from be
neath the rear jacking points.
7. Lower the ramp.
Page 1684 of 2490
Ex
haust System - Muff
ler and Tailpipe LH
Remo
val and Installation
Remov
a
l
Installation
1. Ra
ise the vehicle on a four-post ramp.
2. Slacken the securi
ng clamp, re
ar muffler to intermediate
muffler.
3. Re
move the rear muffler
and tailpipe assembly.
Separate the rear muffl er fr
om
the intermediate muffler.
Di
sengage the rear muffler mounting peg from the
mounting rubber.
R e
move the rear muffler asse
mbly. Rotate the assembly
back and forth to aid removal.
4. Clean the exhaust joints.
1. Fi
t the rear muffler and tailpipe assembly.
Connect
the rear muffl
er to the intermediate muffler and
insert to the Nominal indicator ring.
2. Position and align the rear mu ffler and tailpipe assembly.
Engage the peg with
the mounting rubber.
Chec
k
that the tailpi
pe position is wi thin the specified
settings, adjusting engageme nt within the Maximum and
Minimum indicator rings if necessary; refer to
Specifications in this section.
Page 1685 of 2490
3.
Tigh
ten the securing clamp, re
ar muffler to intermediate
muffler.
4. Lower the ramp.
Page 1686 of 2490
Ex
haust System - Muff
ler and Tailpipe RH
Remo
val and Installation
Remov
a
l
Installation
1. Ra
ise the vehicle on a four-post ramp.
2. Slacken the securi
ng clamp, re
ar muffler to intermediate
muffler.
3. Re
move the rear muffler
and tailpipe assembly.
Separate the rear muffl er fr
om
the intermediate muffler.
Di
sengage the rear muffler mounting peg from the
mounting rubber.
R e
move the rear muffler asse
mbly. Rotate the assembly
back and forth to aid removal.
4. Clean the exhaust joints.
1. Fi
t the rear muffler and tailpipe assembly.
Connect
the rear muffl
er to the intermediate muffler and
insert to the Nominal indicator ring.
2. Position and align the rear mu ffler and tailpipe assembly.
Engage the peg with
the mounting rubber.
Chec
k
that the tailpi
pe position is wi thin the specified
settings, adjusting engageme nt within the Maximum and
Minimum indicator rings if necessary; refer to
Specifications in this section.
Page 1687 of 2490
3.
Tigh
ten the securing clamp, re
ar muffler to intermediate
muffler.
4. Lower the ramp.
Page 1688 of 2490

Fuel System - General Inform
ation - Fuel System
Description an
d Operation
The fuel tank is mounted across the vehicle behind the passenger compartment bulkhead.
Fuel is drawn by the fuel pump from the tank and then supplied to the two fuel rails, via a filter.
Fuel injectors are installed in the fuel ra ils on each side of the intake manifold.
The amount of fuel injected into th e engine is controlled by the ECM.
A cross-over pipe connects the two fuel ra ils together at the front of the manifold.
A test valve in the cross-over pipe allo ws the fuel rail to be pressurized and de-pressurized during the servicing and
troubleshooting procedures.
A pressure regulator on the rear of the right fuel rail controls the pressure in the fuel rails.
A return line directs excess fuel from the pressure regulator back to the fuel tank.
Operation and service procedures
The fuel injector
s, rails, pres
sure regulator and, wher e fitted, supercharger are described in greater detail in Section 303-04
together with servicing procedures.
The fuel tank, pump, fuel level senders and fuel lines are similarly covered in Section 310-01.