Exhaust System-Gas Engines
EXHAUST SYSTEM DIAGNOSIS CHART
| CONDITION | POSSIBLE CAUSE | CORRECTION |
| EXCESSIVE EXHAUST NOISE | 1. Leaks at pipe joints. | 1. Tighten flanges to specified torque at leaking joints. See SPECIFICATIONS . |
| 2. Burned or blown out muffler. | 2. 3.7L/4.7L Replace muffler/tailpipe assembly. See REMOVAL . 5.7L Replace muffler. Check exhaust system. | |
| 3. Burned or rusted-out exhaust pipe. | 3. 3.7L/4.7L Replace muffler/tailpipe assembly. See REMOVAL . 5.7L Replace tailpipe resonator assembly . See REMOVAL . | |
| 4. Exhaust pipe leaking at manifold flange. | 4. Tighten connection attaching nuts. See SPECIFICATIONS . | |
| 5. Exhaust manifold cracked or broken. | 5. Replace exhaust manifold. Refer to REMOVAL - 3.7L. Refer to REMOVAL - 4.7L. Refer to REMOVAL - 5.7L. | |
| 6. Leak between exhaust manifold and cylinder head. | 6. Tighten exhaust manifold to cylinder head stud nuts or bolts. Refer to SPECIFICATIONS - 3.7L. Refer to SPECIFICATIONS - 4.7L. Refer to SPECIFICATIONS - 5.7L. | |
| 7. Restriction in muffler or tailpipe. | 7. Remove restriction, if possible. Replace muffler or tailpipe, as necessary. | |
| 8. Exhaust system contacting body or chassis. | 8. Re-align exhaust system to clear surrounding components. | |
| LEAKING EXHAUST GASES | 1. Leaks at pipe joints. | 1. Tighten flanges. See SPECIFICATIONS . |