Symptom Index

Symptoms - Engine Exhaust
Review the Exhaust System Description and Operation in order to familiarize yourself with the system functions.
Description and Operation

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.
Initial Inspection and Diagnostic Overview



Visual/Physical Inspection
Inspect for aftermarket or non-OEM devices such as, but not including; tailpipe extensions, headers, and exhaust cutouts. This could affect the operation and proper 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
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Loss of Power
Refer to Restricted Exhaust Restricted Exhaust

Poor acceleration
Refer to Restricted Exhaust

Poor fuel economy
Refer to Restricted Exhaust

Excessive smoke (diesel)
Refer to Restricted Exhaust

Exhaust hissing noise
Refer to Exhaust Leakage Exhaust Leakage

Exhaust popping noise
Refer to Exhaust Leakage

Exhaust rattle noise
Refer to Exhaust Noise Exhaust Noise

Loud exhaust noise
Refer to Exhaust Noise

Exhaust buzz, groan, hum noise
Refer to Exhaust Noise