Toyota
Dodge Durango
 Service Manual
Exhaust System
Diagnosis and testing

Exhaust system

EXHAUST SYSTEM DIAGNOSIS CHART

CONDITION

POSSIBLE CAUSE CORRECTION
EXCESSIVE EXHAUST NOISE OR LEAKING EXHAUST GASES 1. Leaks at pipe joints.

2. Rusted or blown out muffler.

3. Broken or rusted out exhaust pipe.

4. Exhaust pipe leaking at manifold flange.

5. Exhaust manifold cracked or broken.

6. Leak between exhaust manifold and cylinder head.

7. Catalytic converter rusted or blown out.

8. Restriction in exhaust system.

1. Tighten clamps/bolts to specified torque at leaking joints.

2. Replace muffler. Inspect exhaust system.

3. Replace exhaust pipe.

4. Tighten/replace flange attaching nuts/bolts.

5. Replace exhaust manifold.

6. Tighten exhaust manifold to cylinder head bolts.

7. Replace catalytic converter assy.

8. Remove restriction, if possible.

Replace restricted part if necessary.

When servicing and replacing exhaust system components, disconnect the oxygen sensor connector(s). Allowing the exhaust to hang by the oxygen sensor wires will damage the harness and/or sensor.
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