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bad rotten egg smell from exhust

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Old 11-13-2009, 06:30 PM
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Default bad rotten egg smell from exhust

my 1992 laredo 4.0 smells like rotten eggs when I give it gas to climb a mountain. I have been told it's the gas I'm using and I have also been told that the catalytic converter is bad and causing it. does anyone hve the same problem or know for sure how to fix it?
Old 11-13-2009, 06:32 PM
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The only thing I have ever smelled that resembles rotten eggs Is differential fluid. If somehow you have a leak and its flying around and hitting exhaust that might do it.
Old 11-13-2009, 07:27 PM
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i have heard the convertor will do that. have you noticed any loss in power or a slightly higher engine temp?
Old 11-13-2009, 07:30 PM
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its probably the cat. convertor, sometimes it will clear its self out in a few days
Old 11-13-2009, 07:31 PM
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Did you just have the converter replaced? They smell just like sulfer when they are doing there job,and when new it is more noticeable.
Old 11-13-2009, 07:41 PM
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wtf is with the over abundance of exhaust questions lately.

It probably is Exhaust related, go talk to a licensed exhaust shop!
Old 11-13-2009, 07:43 PM
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Originally Posted by nw-xj-scott
wtf is with the over abundance of exhaust questions lately.

It probably is Exhaust related, go talk to a licensed exhaust shop!
But that costs money Its cheaper to figure it out yourself
Old 11-13-2009, 07:49 PM
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That smell is normal from a new cat doing its job.Its worse depending on the brand of gas (what adatives they use) you buy.
Old 11-13-2009, 07:51 PM
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Originally Posted by ZachsXJ
But that costs money Its cheaper to figure it out yourself
its an exhaust system. not a @@@@ rubix cube.. whats there to figure out? Replace (note, i didnt say remove) the cat and figure out what made it fail (if a cat fails, their is another underlying problem 100% of the time)

the smell of rotten egg is actually a "Sulfer" smell and its from the platinum or rhodium burning.

Last edited by nick_n_ii; 11-13-2009 at 08:22 PM. Reason: Language
Old 11-13-2009, 07:51 PM
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Originally Posted by nw-xj-scott
wtf is with the over abundance of exhaust questions lately.

It probably is Exhaust related, go talk to a licensed exhaust shop!
Wow, is someone on the rag?

OP, here is some info.
Q Why Does The Exhaust Have A "Rotten Egg" Smell?
A Many times on first start-up in the morning, the exhaust may smell like "rotten eggs". This is due to rich fuel condition with a cold engine. However, as the engine warms up, this smell should go away. If it does not, converter damage could possibly follow with extended driving.
http://www.catalyticconverter.org/faq/index.htm
Old 11-13-2009, 07:59 PM
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Originally Posted by nw-xj-scott
its an exhaust system. not a @@@@ rubix cube.. whats there to figure out? Replace (note, i didnt say remove) the cat and figure out what made it fail (if a cat fails, their is another underlying problem 100% of the time)

the smell of rotten egg is actually a "Sulfer" smell and its from the platinum or rhodium burning.
Dude chill out, if its so simple then why'd you suggest he take it to an exhaust shop? way to contradict yourself

Last edited by nick_n_ii; 11-13-2009 at 08:22 PM. Reason: Language
Old 11-13-2009, 08:09 PM
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faulty O2 sensor, map sensor or vacuum leak.....sympton is the smell, cat still good.
"someone missed their nap today"
Old 11-13-2009, 08:10 PM
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Maybe he should PM gearheadette and see if she will give him some midol..

Heres some more info, OP
http://www.startribune.com/business/11212206.html

PS: no offence to gearheadette, first (only?) woman I can think of on here, Im just joking..
Old 11-13-2009, 08:11 PM
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[QUOTE=Defiance665;328266]Maybe he should PM gearheadette and see if she will give him some midol..

Old 11-13-2009, 08:31 PM
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I think we scaed him off finally


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