formula14

My car smells like rotten eggs is my cat dead?

OldBlue

prolly

firbird

thats what i always been told if a cat goes bad but i dont know

formula14

Looks i have to gut it.

88IROC350TPI

I get that smell when I run regular gas and I don't even have a cat.

john5.7 87Iroc

could mean youre running rich

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1987 Iroc 350
GTS headlight/tail light covers
Camaro SS Wheels w/Sumitomo HTR ZII 275 rear, 255's in front
K&N filters
Adjustable Borla cat back
SLP 1 3/4 headers
w/ Air born coating
3" Catco cat
Large tube runners
ported plenum
Holley afpr

FUTURE GOAL:
To go really F'in fast!!!

Some pics of it at
http://albums.photopoint.com/j/Album...949&Auth=false or (still working on) http://members.cardomain.com/john87iroc

rezinn

There is sulfur in gas, sometimes more in some than others.. try changing brands.

MaximumRacin

my freind ran reguler from texaco and said it smelled like eggs. so the next day he put super and it didnt smell at all

formula14

Thanks for the help guys. Im gonna Gut it. Hopefully that will make it smell normal. If that doesnt fix it i'll check on the mixture

gmanuel

Don not gut it. I have a new cat and I have the same smell. I have adjusted the idle air mxture and it corrected the problem

formula14

How did you adjust it? Would a new 02 sensor help? Im gonna put new wires and cap and rotor on this weekend so should i just go ahead and change the 02 sensor too?

formula14

My car has been idling pretty rough ever since it started smelling. Are those symptoms of a bad cat or bad air/fuel mixture? opr both

rezinn

Try changing the o2 sensor, that can cause you to idle badly. An old cat won't cause any problems, unless its clogged.

ChillPhatCat

If there's a dead cat in your exhaust I wouldn't expect the engine to run that well... How'd it get in there? j/k

formula14

Actually my sisters cat did disappear right around the time my car started smelling