Symptom Index

Symptoms - Engine Exhaust

- Review the Exhaust System Description and Operation in order to familiarize yourself with the system functions. Refer to Exhaust System Description, 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 Restricted Exhaust
- Poor fuel economy
- Refer to Restricted Exhaust Restricted Exhaust
- Excessive smoke (diesel)
- Refer to Restricted Exhaust Restricted Exhaust
- Exhaust hissing noise
- Refer to Exhaust Leakage Exhaust Leakage
- Exhaust popping noise
- Refer to Exhaust Leakage Exhaust Leakage
- Exhaust rattle noise
- Refer to Exhaust Noise Exhaust Noise
- Loud exhaust noise
- Refer to Exhaust Noise Exhaust Noise
- Exhaust buzz, groan, hum noise
- Refer to Exhaust Noise Exhaust Noise