2001 Kia Optima Knocking and Sulpuric Smell

2001 KIA OPTIMA
145,000 MILES • 6 CYL • FWD • AUTOMATIC
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ADODD1976
  • MEMBER
  • 1 POST
When starting my car up this morning, it started with no problem, but it rattled and knocked quickly and loudly (which it has never done before). I decided to let it run for awhile and see if it would "warm up". After about 5 minutes I went back outside and the car was giving off a strong smell, it was a sulphuric smell. Do you have any ideas what could be the problem?
Jan 27, 2009 at 11:44 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Based on your description, I would say the catylatic converter has come apart inside. It will rattle and can make that smell. Take a rubber mallot and tap on the converter to determine if that is where the rattle has come from. IF it is, it will need replaced.
Jul 11, 2009 at 8:48 PM
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