Rotten Egg/Sulfer smell - JeepForum.com

 
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post #1 of 9 Old 07-04-2002, 12:16 PM Thread Starter
yaffy
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Rotten Egg/Sulfer smell

The guy I bought my '94 YJ from had the exhaust replaced about 4 weeks ago (new cat, muffler, pipes). It smells like rotten eggs (sulfer). I think this is normal for a new exhaust, but maybe someone can verify this?


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97 TJ Lifted. Locked. Unstocked
05 Ram 2500 CTD 600 QC 6spd 4x4 SWB. 315s. BOMBed
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post #2 of 9 Old 07-04-2002, 12:26 PM
Dan Morera
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I used to sell new cars (I know don't kill me), that's the smell of the new cat.

YJ Sahara 88, 258 I6, BA/10
2.5" Susp. Lift (Aprox.), 1" Shackles 31x10.5" Cooper
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post #3 of 9 Old 07-04-2002, 01:15 PM
igofshn
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That is the smell of a bad catalytic converter. It needs to be replaced.

2007, 4 door, powered by a minivan engine, locked and riding on 35's.


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post #4 of 9 Old 07-04-2002, 03:40 PM
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Although the main cause of that is a worn-out cat, I saw that you mentioned that you have a new one installed, so the next most common cause is a mixture that is too rich (excess hydrocarbons--unburned gas--is how I've had it explained to me). Does you jeep run fine otherwise? A bad oxygen sensor would mean that the mixture is not being properly regulated, but that would also show up as a rough idle (usually). It's true that a new cat can have that smell, so it may solve itself, and in the meantime you can try a different brand of gas, as some brands are better and have less sulfur in them than others. Keep in mind that until the cat warms up (it operates at several hundred degrees), it will not be 100% effective, so if it just does this in the first few miles, it's nothing to be concerned about.

Currently an '86 CJ-7 and a '77 CJ-7 Golden Eagle---#4 and 5 following a '01 Sahara, '90 Sahara, and '85 CJ-7....
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post #5 of 9 Old 07-05-2002, 09:41 AM
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When I had my new system installed. It smelled really bad for a few days. But after that it was back to normal.
Manifold back, high flow cat with a flowmaster.

1994 Bronco HD
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post #6 of 9 Old 07-07-2002, 06:28 PM Thread Starter
yaffy
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Thanks for the info guys. I was thinking O2 sensor but wasn't sure. I'll check that, since they say they can go bad in 40K-50K miles.

I bend skid plates
97 TJ Lifted. Locked. Unstocked
05 Ram 2500 CTD 600 QC 6spd 4x4 SWB. 315s. BOMBed
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post #7 of 9 Old 07-16-2002, 10:10 AM
mxg342
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Yaffy,
Where are you from in PA?

'84 CJ-7 Junkyard TBI 360/T18/D300, 4" 4WDH Lift, D44 front with ARB and HS/D44 Rear w/ Detroit, 4.56s, 36" Iroks, TFI, TJ flares, Homemade rocker guards and bumpers with swing out, Optima Yellow Top, M8000, York OBA, 6pt cage
"when you're up to your *** in alligators, it is hard to remember that your original intention is to drain the swamp"
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post #8 of 9 Old 07-19-2002, 11:21 AM Thread Starter
yaffy
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I'm from Lancaster, but during the school year I'll be living ins State College. Where you at?

I bend skid plates
97 TJ Lifted. Locked. Unstocked
05 Ram 2500 CTD 600 QC 6spd 4x4 SWB. 315s. BOMBed
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post #9 of 9 Old 07-21-2002, 08:06 PM
mxg342
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yaffy,

I'm originally from the kittanning/Indiana area but I too will be living in PSU this fall. Penn State Apartments at the corner of Foster and Gill Street.

'84 CJ-7 Junkyard TBI 360/T18/D300, 4" 4WDH Lift, D44 front with ARB and HS/D44 Rear w/ Detroit, 4.56s, 36" Iroks, TFI, TJ flares, Homemade rocker guards and bumpers with swing out, Optima Yellow Top, M8000, York OBA, 6pt cage
"when you're up to your *** in alligators, it is hard to remember that your original intention is to drain the swamp"
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