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Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5

 
BrokenTech
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01/04/2017 04:31 PM
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Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am fairly mechanically inclined, I do all the maintenance and repairs on my cars. I have encountered an issue that has perplexed me and was looking for more insight.

I am getting a rotten egg smell. As I have always understood it, the rotten egg smell is the result of the sulfur in the fuel contacting the platinum in the catalytic converter.

I am going to withhold a few vehicle specifics, for now, because I have been getting some automatic generic responses that the catalytic is bad and needs to be replaced. I do not buy that, however, if this continues I believe on a long enough time line it will eventually ruin the catalytic. In this case if I were to replace the catalytic, I do not feel the problem would be resolved and would still continue.

I will say that if I change who I buy the fuel from it seems to stop temporarily. It seems to resolve it for 3-4 tanks of gas then it returns. I have three different places that I cycle through buying gas from.

What could be some other things that could cause this to happen? I will say that I am forced to use premium fuel.

Sorry for the lack of vehicle information and vagueness, this is just how my bullshit detectors work.

Last Edited by BrokenTech on 05/08/2017 09:07 PM
Anonymous Coward
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01/04/2017 04:48 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Fuel pressure, or your temp sender is relaying bogus data.
Anonymous Coward
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01/04/2017 04:51 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Get the engine warmed up. While running, open the egr up and SLOWLY suck water through a vacuum line while revving the engine up and down. Do this for about 5min. Reconnect everything and take it for a drive and open it up. Should clean it right up.
Manosteel

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01/04/2017 04:52 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am not a mechanic but I have had this problem before....

Your catalytic converter is prob going bad
Only idiots hate facts
Anonymous Coward
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01/04/2017 04:54 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Someone play a joke and actually put rotten eggs in your car? chuckle
Anonymous Coward
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01/04/2017 04:55 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
That smell is usually caused by a problem with the AC system OP.
BrokenTech  (OP)

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01/04/2017 04:56 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Fuel pressure, or your temp sender is relaying bogus data.
 Quoting: Anonymous Coward 73726185


Performance wise, the fuel pressure seems to be fine. I have not noticed any acceleration or other performance issues. I will add checking the pressure to my list to rule in/out.

Regarding the temp sender, would running a 180 degree thermostat play any role?
Anonymous Coward
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01/04/2017 04:56 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Crankshaft has split a journal, full rebuild required.
Anonymous Coward
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01/04/2017 04:57 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
The hooker's nasty ass g-string that you forgot about?
Anonymous Coward
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01/04/2017 04:58 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Your breath, blowing back in your face?
Anonymous Coward
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01/04/2017 04:58 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
The scent of your wife?
Anonymous Coward
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01/04/2017 04:59 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
The scent of your wife?
 Quoting: Anonymous Coward 73726185


What did he say?
Anonymous Coward
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01/04/2017 04:59 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
The scent of your wife?
 Quoting: Anonymous Coward 73726185


What did he say?
 Quoting: Anonymous Coward 73726185


He said close your legs dear.
Anonymous Coward
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01/04/2017 05:00 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Battery
BrokenTech  (OP)

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01/04/2017 05:01 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Battery
 Quoting: Anonymous Coward 73674557


Battery is fine.
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01/04/2017 05:01 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Fuel pressure, or your temp sender is relaying bogus data.
 Quoting: Anonymous Coward 73726185


Performance wise, the fuel pressure seems to be fine. I have not noticed any acceleration or other performance issues. I will add checking the pressure to my list to rule in/out.

Regarding the temp sender, would running a 180 degree thermostat play any role?
 Quoting: BrokenTech


Make and model, for proper diagnosis?

Could be running too warm.
anonymous
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01/04/2017 05:01 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Cat converter is correct.
Kanye Twitty

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01/04/2017 05:02 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am not a mechanic but I have had this problem before....

Your catalytic converter is prob going bad
 Quoting: Manosteel


This. It'll smell like a shithouse.
Anonymous Coward
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01/04/2017 05:02 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am fairly mechanically inclined, I do all the maintenance and repairs on my cars. I have encountered an issue that has perplexed me and was looking for more insight.

I am getting a rotten egg smell. As I have always understood it, the rotten egg smell is the result of the sulfur in the fuel contacting the platinum in the catalytic converter.

I am going to withhold a few vehicle specifics, for now, because I have been getting some automatic generic responses that the catalytic is bad and needs to be replaced. I do not buy that, however, if this continues I believe on a long enough time line it will eventually ruin the catalytic. In this case if I were to replace the catalytic, I do not feel the problem would be resolved and would still continue.

I will say that if I change who I buy the fuel from it seems to stop temporarily. It seems to resolve it for 3-4 tanks of gas then it returns. I have three different places that I cycle through buying gas from.

What could be some other things that could cause this to happen? I will say that I am forced to use premium fuel.

Sorry for the lack of vehicle information and vagueness, this is just how my bullshit detectors work.
 Quoting: BrokenTech


(I'm not a mechanic but I listen to Car Talk)
First thing I thought is Cat converter.

Google also mentions you could have a problem with fuel pressure (filter). Or your engine might be running too hot (thermostat or sensor). Or a rich air/fuel mixture. Which could also be a O2 sensor out of whack, and also ties in with the fuel pressure thing.

So why not check out the fuel filter and pressure and the thermostat? Those things are not that hard to diagnose. An O2 sensor, I don't know how you check those.
Anonymous Coward
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01/04/2017 05:03 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am not a mechanic but I have had this problem before....

Your catalytic converter is prob going bad
 Quoting: Manosteel


bump
Anonymous Coward
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01/04/2017 05:03 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Cat converter is correct.
 Quoting: anonymous 71647481


Not always. Is the CAT rattling?
BrokenTech  (OP)

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01/04/2017 05:03 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Fuel pressure, or your temp sender is relaying bogus data.
 Quoting: Anonymous Coward 73726185


Performance wise, the fuel pressure seems to be fine. I have not noticed any acceleration or other performance issues. I will add checking the pressure to my list to rule in/out.

Regarding the temp sender, would running a 180 degree thermostat play any role?
 Quoting: BrokenTech


Make and model, for proper diagnosis?

Could be running too warm.

 Quoting: Anonymous Coward 73726185


To warm? With a 180 degree thermostat?
Anonymous Coward
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01/04/2017 05:04 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Battery
 Quoting: Anonymous Coward 73674557


Battery is fine.
 Quoting: BrokenTech


Not being overcharged by alternator ?
BrokenTech  (OP)

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01/04/2017 05:05 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Cat converter is correct.
 Quoting: anonymous 71647481


Not always. Is the CAT rattling?
 Quoting: Anonymous Coward 73726185


No.
Anonymous Coward
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01/04/2017 05:06 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
Fuel pressure, or your temp sender is relaying bogus data.
 Quoting: Anonymous Coward 73726185


Performance wise, the fuel pressure seems to be fine. I have not noticed any acceleration or other performance issues. I will add checking the pressure to my list to rule in/out.

Regarding the temp sender, would running a 180 degree thermostat play any role?
 Quoting: BrokenTech


Make and model, for proper diagnosis?

Could be running too warm.

 Quoting: Anonymous Coward 73726185


To warm? With a 180 degree thermostat?
 Quoting: BrokenTech


Please refer to the above. 180 is a normal operating range for most ICE's.
Anonymous Coward
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01/04/2017 05:08 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am giving my honest experience as a 20+ year mechanic. Typically, the only times I smell what you are describing is when I drive a car hard that has not been driven hard. I can test drive cars the same way every time but some will smell sulphury and some not. Same models, same manufacturers.

I think it's more the catalyst needs cleaned out and I am heating it up more than the customer would during their routine driving. Does this sound possible under your circumstances?
BrokenTech  (OP)

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01/04/2017 05:08 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
...


Performance wise, the fuel pressure seems to be fine. I have not noticed any acceleration or other performance issues. I will add checking the pressure to my list to rule in/out.

Regarding the temp sender, would running a 180 degree thermostat play any role?
 Quoting: BrokenTech


Make and model, for proper diagnosis?

Could be running too warm.

 Quoting: Anonymous Coward 73726185


To warm? With a 180 degree thermostat?
 Quoting: BrokenTech


Please refer to the above. 180 is a normal operating range for most ICE's.
 Quoting: Anonymous Coward 73726185


Fair enough, engine is supercharged. I will reveal more as I feel it is necessary.
Anonymous Coward
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01/04/2017 05:09 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
How bout quit beating the shit of your car.
Anonymous Coward
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01/04/2017 05:10 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
I am fairly mechanically inclined, I do all the maintenance and repairs on my cars. I have encountered an issue that has perplexed me and was looking for more insight.

I am getting a rotten egg smell. As I have always understood it, the rotten egg smell is the result of the sulfur in the fuel contacting the platinum in the catalytic converter.

I am going to withhold a few vehicle specifics, for now, because I have been getting some automatic generic responses that the catalytic is bad and needs to be replaced. I do not buy that, however, if this continues I believe on a long enough time line it will eventually ruin the catalytic. In this case if I were to replace the catalytic, I do not feel the problem would be resolved and would still continue.

I will say that if I change who I buy the fuel from it seems to stop temporarily. It seems to resolve it for 3-4 tanks of gas then it returns. I have three different places that I cycle through buying gas from.

What could be some other things that could cause this to happen? I will say that I am forced to use premium fuel.

Sorry for the lack of vehicle information and vagueness, this is just how my bullshit detectors work.
 Quoting: BrokenTech


Ford Explorer? amirite?
Anonymous Coward
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01/04/2017 05:11 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
How about, stop fucking around with us?

Fix your own fucking car.
Anonymous Coward
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01/04/2017 05:12 PM
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Re: Question for the Auto Mechanics, Rotten Egg Smell *REVISITED* Pg 5
...


Make and model, for proper diagnosis?

Could be running too warm.

 Quoting: Anonymous Coward 73726185


To warm? With a 180 degree thermostat?
 Quoting: BrokenTech


Please refer to the above. 180 is a normal operating range for most ICE's.
 Quoting: Anonymous Coward 73726185


Fair enough, engine is supercharged. I will reveal more as I feel it is necessary.
 Quoting: BrokenTech



Lmao definitely beating the shit out of your car.





GLP