| • | Review the exhaust system description and operation in order to familiarise
yourself with the system functions. Refer to
Exhaust System Description. |
| • | All diagnostics on a vehicle should follow a logical process. Strategy
based diagnostics is a uniform approach for repairing all systems. The diagnostic
flow is the place to start when repairs are necessary and may always be used in order
to resolve a system problem. For a detailed explanation, refer to
Strategy Based Diagnosis. |
Visual/Physical Inspection
| • | Inspect for aftermarket or non-OEM devices. These could affect the operation
and performance of the exhaust system. |
| • | Verify the exact operating conditions under which the concern exists.
Note factors such as engine RPM, engine temperature, engine load, and frequency of
concern. |
| • | Inspect the easily accessible or visible system components for obvious
damage or conditions which could cause any symptom. |
Intermittent
Test the vehicle under the same conditions that the customer reported in order
to verify the system is operating as designed.
Symptom List
For the following symptoms, refer to
Restricted Exhaust
For the following symptoms, refer to
Exhaust Leakage.
For the following symptoms, refer to
Exhaust Noise.
| • | Exhaust buzz, groan or hum |
