The Smell is Awful
Originally posted by IMPACT
....so if anyone has any intellegent answers .......TIA
....so if anyone has any intellegent answers .......TIA
Come on, you asked for advice on subject, then criticize me as being "unitelligent" when you don't like the answer. (Which sorry to say, ended up being the right one)
I'm glad you can use a dictionary too.
Well how about we just end this now......no need to get into a online arguement...lets just both walk away from this ......my apologies to you Ambient and everyone else that i under the impression that i don't accept their suggestions.
from a another post a while back:
From other things I have read if you run your engine lean for a while the sulfur from the gasoline will have stored itself in the catalytic converter in the form of sulphur trioxide. Then, when you stomp on the gas and allow the engine to run richer, it is released in the form of hydrogen sulphide (which is what smells that way).
There was a good web page the explained the exact chemistry but it has since then moved to a new location and I can not seem to find it.
Apparently as the catalytic converter ages the smell is supposed to diminish but will never completely go away.
Other things that I have read is that certain gas formulations are more likely to do this than others. As the production of sulfur dioxide (which is what is converted to sulfur trioxide in the catalytic converter) is heavier when running certain fuel/air mixtures (real lean) it might make sense to try a different octane gas as it might change the mix a little... not sure if it will do anything, but what can it hurt.
EDIT: I suggest a search on the web with the key words "rotten egg smell from exhaust" you will get a whole bunch of web pages that describe something similar that I wrote above...
here are some you can jump over to:
http://www.sjmautotechnik.com/exhaust.html (based on Audi tech bulletin, or so it says)
http://p-car.com/technical/sulfur.htm (based on Porsche tech bulletin, or so it says)
From other things I have read if you run your engine lean for a while the sulfur from the gasoline will have stored itself in the catalytic converter in the form of sulphur trioxide. Then, when you stomp on the gas and allow the engine to run richer, it is released in the form of hydrogen sulphide (which is what smells that way).
There was a good web page the explained the exact chemistry but it has since then moved to a new location and I can not seem to find it.
Apparently as the catalytic converter ages the smell is supposed to diminish but will never completely go away.
Other things that I have read is that certain gas formulations are more likely to do this than others. As the production of sulfur dioxide (which is what is converted to sulfur trioxide in the catalytic converter) is heavier when running certain fuel/air mixtures (real lean) it might make sense to try a different octane gas as it might change the mix a little... not sure if it will do anything, but what can it hurt.
EDIT: I suggest a search on the web with the key words "rotten egg smell from exhaust" you will get a whole bunch of web pages that describe something similar that I wrote above...
here are some you can jump over to:
http://www.sjmautotechnik.com/exhaust.html (based on Audi tech bulletin, or so it says)
http://p-car.com/technical/sulfur.htm (based on Porsche tech bulletin, or so it says)
Last edited by JJB; Dec 21, 2002 at 08:18 AM.
Yes, as Ambiant said, I took what you had written to offence. I am free to post my thoughts on any board last time I checked. My post was just to voice my agreement with what Ambiant had
to say, I was just posting my thoughts.
Maybe I took what you wrote the wrong way. Maybe we should both think before we speak. Sorry if I stuck my nose in where it didn't belong but it's in my nature to not sit by when I see something I don't like. Shake?
to say, I was just posting my thoughts.
Maybe I took what you wrote the wrong way. Maybe we should both think before we speak. Sorry if I stuck my nose in where it didn't belong but it's in my nature to not sit by when I see something I don't like. Shake?
I agree. Its the catalytic. I had this problem before on an older car that I had and they told be it was the cat. It is possible the MS exahust is making the smell more apparent. Being that its a cat back system you may have a leak on the seal between the pipe and the cat. this is why it may smell stonger near the fron of the car Here is an article I found.
http://www.swri.edu/10light/catalyst.htm
http://www.swri.edu/10light/catalyst.htm
Originally posted by KYREDP5
Most of you still have factory warranty. Why not take in in instead of arguing? Seems like that would get it fixed alot faster.
Most of you still have factory warranty. Why not take in in instead of arguing? Seems like that would get it fixed alot faster.
Originally posted by ES2.0GT
Oh, i see. So you suggest he goes in under the assumption that it's not the exhaust and if it is tough luck. Point taken.
Oh, i see. So you suggest he goes in under the assumption that it's not the exhaust and if it is tough luck. Point taken.
Originally posted by TheMAN
there is no warranty work to be done... it is considered normal... there's a TSB on this
there is no warranty work to be done... it is considered normal... there's a TSB on this
Well, I've got that smell now too. The funny thing is it's a stock exhaust system with 7000 kms on it. The only time it smells though is when i'm driving up a mountain for extended periods, working the engine hard.
Now if it's really the exhaust that smells, how come it smells like it's coming from the front of the car? And why do I only notice the smell now after a year of driving?
Now if it's really the exhaust that smells, how come it smells like it's coming from the front of the car? And why do I only notice the smell now after a year of driving?



