Could a smelly exhaust (rotten eggs) be caused by anything other than the CAT's themselves? Does it mean the CAT is bad? Clogged? What? I don't understand how CATs work, and what makes them smell. Can anyone please explain? TIA!!!

-AR

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2001 F-150 XLT 4X4 Off-Road, S/C, FS, Black
- 4.6L Triton V8 (Romeo, 20 HP Increase)
- 5 Speed / 3:55 Reg. Axle
- Keyless
- Premium Audio CD
Mods.
- K&N Cold Airbox / Throttle Body Mod.
- Flowmaster 40 (Stock Setup with 3 1/2" x 10" Gibson Tip)
- Cranked Torsion Bars
- Bugshield
- Bedliner
- Ventshades
Build Date: 8/23/00 (Kansas City Plant)

arobbins@mail.liberty.k12.mo.us

 

I put a reply in the engine section, but anyways cats very rarly fail on there own, they generaly only fail due to a falure of another componet, for exaple overfueling and engine missfire cause cats to overheat and to melt down ( egg smell caused by incorrect air/fuel ratio )
cats contain platinum, rhodium and pladium which create a chemical reaction thus changing HC, CO, NoX emmissions into carbon dioxide and water vapour ( humans breathe out carbon dioxide and water vapour )so if you see a vehicle with water dripping or runing out of the tail pipe it is a good indication of a well running engine and an equally well function exuast emissions system