SECTION 6F - ENGINE EXHAUST (X22SE 2.2L)
Service Precaution
General Description
Front Exhaust Pipe
Front Exhaust Pipe and Associated Parts
Removal
Installation
Exhaust Silencer
Exhaust Silencer and Associated Parts
Removal
Installation
Rear Exhaust pipe
Rear Exhaust pipe and Associated Parts
Removal
Installation
Main Data and Specifications
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING, REFER
TO THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNEEDED SRS SYSTEM
REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or
other corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping f or ce, and may dama ge the fastener . Wh en
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts
and systems.
Techline
General Description
150RX013
When inspecting or replacing exhaust system
components, make sure there is adequate clearance
from all points on the underbody to prevent overheating
the floor pan and possible damage to the passenger
compartment insulation and trim materials.
Check complete exhaust system and nearby body areas
and rear compartment lid for broken, damaged, missing
or mispositioned parts, open seams, holes, loose
connections or other deterioration which could permit
exhaust fumes to seep into the rear compartment or
passenger compartment. Dust or water in the rear
compartment may be an indication of a problem in one
of these areas. Any faulty areas should be corrected
immediately.
Hangers
Various types of hangers are used to support exhaust
system(s). These include conventional rubber straps,
rubber rings, and rubber blocks.
The installation of exhaust system supports is very
important, as improperly installed supports can cause
annoying vibrations which can be difficult to diagnose.
Three Way Catalytic Converter
The three way catalytic converter is an emission control
device added to the exhaust system to reduce pollutants
from the exhaust gas stream.
CAUTION: The catalytic converter requires the use
of unleaded fuel only.
Periodic maintenance of the exhaust system is not
required. If the vehicle is raised for other service, it is
advisable to check the condition of the complete
exhaust system.
A dual bed monolith catalytic converter is used in
combination with three way catalytic converter.
Catalytic Types:
Three wa y (Reduction/Oxidation) catalyst
The catalyst coating on the three way (reduction)
converter contai ns pla tinum and rh odi um whi ch lowers
the levels of nitrous oxide (NOx) as well as
hydrocarbons (HC) and carbon monoxide (Co).
Gasket
The gasket must be replaced whenever a new exhaust
pipe, m uffler or catalytic converter is installed.
Front Exhaust Pipe
Front Exhaust Pipe and Associated Parts
150RX012
Legend
EndOFCallout
Removal
1. Disco nne ct batte ry ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Disconnect O2 sensor harness connector and
remove front side O2 sensor (2).
4. Remove front exhaust pipe fixing bolts (6),(7).
5. Remove front e xhaust pipe fixing four stud nuts from
exhaust manifold (1).
6. Remove front exhaust pipe (3).
Installation
1. Install front exhaust pipe (3) and tighten four stud
nuts (1) and two bolts (6) to the specified torque:
Torque:
Stud Nuts : 28 N·m (2.9 kg·m/21 lbft)
Bolts (6) : 43 N·m (4.4 kg·m/32 lbft)
Bolts (7) : 23 N·m (2.3 kg·m/17 lbft)
2. Tighten front side O2 sensor and reconnect O2
sensor harness connector.
Torque : 55 N·m (5.6 kg·m/41 lbft)
(1) Front Exhaust Pipe Fixing Nuts
(2) O2 Se nsor
(3) Front Exhaust Pipe with Three Way Catalytic
Converter
(4) Front Exhaust Pipe Mounting Rubber
(5) Front Exhaust Pipe Fixing Bolt
(6) Front Exhaust Pipe Fixing Bolt (Clamp)
(7) Front Exhaust Pipe Mounting Bracket
Exhaust Silencer
Exhaust Silencer and Associated Parts
150RW032
Legend
EndOFCallout
Removal
1. Disco nne ct batte ry ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove exhaust silencer fixing nuts (3) then
disconnect rear exhaust pipe from exhaust silencer.
4. Remove exhaust silencer fixing nuts (2) then
disconnect exhaust silencer from front exhaust pipe
(5).
5. Remove exhaust silencer mounting nuts (8) from
chassis side then remove exhaust silencer (1).
Installation
1. Install the exhaust silencer (1) chassis side and
tighten two nuts (8) to the specified torque.
Nuts: 15 N·m (1.5 kg·m/11 lbft)
2. Install the exhaust silencer and tighten two Bolts (2)
on front exhaust pipe to specified torque.
Bolts: 43 N·m (4.4 kg·m/32 lbft)
3. Install the rear e xhaust pipe and tighten two nuts (3)
on exhaust silencer to specified torque.
Nuts: 43 N·m (4.4 kg·m/32 lbft)
(1) Exhaust Silencer
(2) Front Exhaust Pipe Fixing Bolt
(3) Exhaust Silencer Fixing Nuts
(4) Exhaust Rear Pipe
(5) Mounting Rubber
(6) Mounting Rubber
(7) Mounting Rubber
(8) Exhaust Silencer Fixing Nuts
Rear Exhaust pipe
Rear Exhaust pipe and Associated Parts
150RW032
Legend
EndOFCallout
Removal
1. Disco nne ct batte ry ground cable.
2. Raise the vehicle and support with suitable safety
stands.
3. Remove rear exhaust pipe fixing nuts (3), then
disconnect rear exhaust pipe from exhaust silencer.
4. Remove mounting rubber (5), (6).
5. Remove rear exhaust pipe (4).
Installation
1.Install the mounting rubber (5), (6).
2. Install the exhaust pipe (4) and tighten two nuts (3)
on exhaust silencer to specified torque.
Nuts: 43 N·m (4.4 kg·m/32 lbft)
(1) Exhaust Silencer
(2) Front Exhaust Pipe Fixing Bolt
(3) Exhaust Silencer Fixing Nuts
(4) Exhaust Rear Pipe
(5) Mounting Rubber
(6) Mounting Rubber
(7) Mounting Rubber
(8) Exhaust Silencer Fixing Nuts
Main Data and Specifications
Torque Specifications
150RX011