Two problems related to manifold/header/muffler/tail pipe have been reported for the 1999 Kia Motor Sephia. The most recently reported issues are listed below.
Air intake manifold caught on fire.
Consumer stated the resonator separated at the seam and could cause vehicle fumes. Consumer contacted the service department, and was told that it was a manufacturer defect, and was not damaged with normal wear and tear. Scc.