Inspection and Verification
- Verify the customer concern.
- Visually inspect the components of the exhaust system and related controls that may affect exhaust gas quality or loss of power.
- Visually inspect for obvious signs of mechanical damage. Refer to the following chart.VISUAL INSPECTION CHART
Mechanical - Exhaust pipe pinched or crushed
- Damaged muffler
- Broken or damaged exhaust hanger brackets
- Damaged catalytic converter
- Cracked exhaust manifold
- Loose or damaged heat shields
- Verify that the exhaust system is installed correctly, with clamps correctly located and tightened to specification.
- If the fault is not visually evident, determine the symptom. GO to Symptom Chart - Exhaust System or GO to Symptom Chart - NVH .