| EXCESSIVE EXHAUST NOISE (UNDER HOOD) |
1. Exhaust manifold cracked or broken. |
1. Replace manifold. |
| 2. Manifold to cylinder head leak. |
2. Tighten manifold and/or replace gasket. |
| 3. Exhaust flex joint to manifold leak. |
3. Tighten fasteners or replace gasket. |
| 4. Exhaust flex joint. |
4. Replace catalytic converter assembly. |
| 5. Pipe and shell noise from front exhaust pipe. |
5. Characteristic of single wall pipes. |
| EXCESSIVE EXHAUST NOISE |
1. Leaks at pipe joints. |
1. Tighten or replace clamps at leaking joints. |
| 2. Burned, blown, or rusted out exhaust pipe or muffler. |
2. Replace muffler or exhaust pipes. |
| 3. Restriction in muffler or tailpipe. |
3. Remove restriction, if possible or replace as necessary. |
| 4. Catalytic converter material in muffler. |
4. Replace muffler and converter assembly. Check fuel injection and ignition systems for proper operation. |