Chery Tiggo. Manual — part 235
EXHAUST
07
CONTENTS
page
Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-1
EXHAUST SYSTEM
GENERAL INFORMATION
07-2
Description
07-2
Operation
07-3
Specifications
07-3
DIAGNOSIS AND TESTING
07-4
Exhaust System Diagnostic Chart
07-4
ON-VEHICLE SERVICE
07-5
Exhaust Pipe Assembly
07-5
Removal & Installation - 1.6L & 1.8L &
2.0L
07-5
Removal & Installation - 2.4L
07-5
Muffler
07-6
Removal & Installation
07-6
Catalytic Converter
07-6
Description
07-6
Operation
07-6
Removal & Installation
07-7
07
GENERAL INFORMATION
Description
The exhaust system provides an exit for exhaust gases and reduces engine noise by moving exhaust gases through
the three-way catalytic converter, a muffler inlet pipe and a muffler. Rubber exhaust hanger insulators attach the
exhaust system to the mounting hooks.
The exhaust system contains the following components:
• Catalytic converter assembly
• Muffler assembly
• Exhaust brackets with isolators bolted to the body
• Heated oxygen sensors mounted to the exhaust pipes
• Tailpipe assembly
1.6L & 1.8L & 2.0L Exhaust System
2.4L Exhaust System
LTSM070003
LTSM070004
WARNING!
Exhaust gases contain carbon monoxide which can be harmful to your health and are potentially lethal. Exhaust
system leaks should be repaired immediately. Never operate the engine in enclosed areas. Failure to follow
these instructions may result in personal injury or death.
Operation
In order to reduce vehicle emissions released by the engine, the catalytic converter is required to perform in all oper-
ating conditions. This reduction is especially beneficial during the cold start and warm up phases of operation, which
is when a majority of the tailpipe emissions occur on today’s vehicles because the catalytic converter has not yet
reached its operating temperature. The exhaust system channels exhaust gases from the engine and away from the
vehicle.
Specifications
Torque Specifications
DESCRIPTION
TORQUE (N·m)
Catalytic Converter Mounting Nuts
50
Exhaust Manifold Flange Bolts
49 ± 5
Muffler Mounting Nuts
50
GENERAL INFORMATION
07
DIAGNOSIS AND TESTING
Exhaust System Diagnostic Chart
CONDITION
POSSIBLE CAUSES
CORRECTION
Excessive Exhaust Noise
· Leaks at pipe joints.
· Burned or blown out muffler.
· Burned or rusted-out exhaust pipe.
· Exhaust pipe leaking at manifold
flange.
· Exhaust manifold cracked or
broken.
· Leak between exhaust manifold
and cylinder head.
· Restriction in muffler or tailpipe.
· Exhaust system contacting body or
chassis.
· Tighten clamps to specified torque
at leaking joints.
· Replace muffler assembly.
· Replace exhaust pipe.
· Tighten connection attaching nuts.
· Replace exhaust manifold.
· Tighten exhaust manifold to
cylinder head stud nuts or bolts.
· Remove restriction, if possible.
Replace muffler or tailpipe, as
necessary.
· Re-align exhaust system to clear
surrounding components.
Leaking Exhaust Gases
· Leaks at pipe joints.
· Tighten/replace clamps at leaking
joints.
Excessive Exhaust Temperature
· Ignition timing incorrect.
· Poor fuel quality.
· Engine running rich.
· Adjust the timing.
· Change and clean the fuel tank.
· Repair as needed.
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