- Catalytic converter substrate melting
- Muffler/resonator packing has failed and is getting sucked out the exhaust
The Potential Cause:
- Catalytic converter substrate melting: High exhaust gas temperatures can melt the substrate inside the catalytic converter, causing the ceramic material to break apart and get sucked out the tailpipe.
- Muffler/resonator packing failure: The packing inside the muffler or resonator can deteriorate and get sucked out the exhaust. This is especially common in older vehicles with high mileage.
In either case, it is important to have the problem diagnosed by a qualified mechanic as soon as possible to avoid further damage to the exhaust system.
Potential Solutions
- For a melted catalytic converter, replacement is usually the best option, while a failed muffler or resonator can often be repaired or replaced.
Possible Costs:
- Catalytic converter replacement: $500 to $1,000+
- Muffler/resonator repair or replacement: $200 to $400
