Rotten Egg Smell Continued

[NoahsArk117]

ive posted about this before but ive noticed a few things that I wanted some thoughts on.

I've been getting this rotten egg/sulfer smell for at least a month now whenever I go WOT in higher gears. I know this is coming from the catalytic converter but I don't know if it's the converter itself or if it's another problem. The smell usually appears after long pulls in higher gears (3rd, 4th, 5th). I can rip it around town in 1st and 2nd gear and not smell a thing but the moment I get on it whenever I'm cruising on the freeway the smell returns. Car runs and drives fine and there are no lights at all.

Here are a few things that have happened over the past few months.

>New clutch system was put in (smell was present before and after this) just wear and tear on the old one due to normal use

> Cylinder 3 misfire, I put cheap autolite plugs in a year ago and it was only a matter of time before they crapped out, the car idles smoother now but again, the smell was present before and after the plug change

> idle afr bounces between 13.8-14.1 it's been like this for years but just thought I'd share, not sure what normal is. But I'm running a Ford Power Pack 2 kit with a 91 octane tune.

> O2 sensors inspected and cats inspected nothing abnormal going on from what I've been able to tell. Cats aren't overheating and don't rattle when smacked with a rubber mallet.

Sponsored

 

[Linkster1666]

You have bitched about this before and, if I remember correctly, everyone told you what is going on.

SO, I will tell you AGAIN. A catalytic converter is basically a filter. At hard throttle or WOT the catalytic converters CANNOT process the the amount of exhaust/fuel as designed and will EMIT a sulfuric smell and it will get worse the hotter they are. EVERY F'NG TIME!!

With a clue as to what a catalytic converter is and how it works, go study (GOOGLE) on that for a few days, then go spend $2500 on some long tube headers WITHOUT CATS, then get back to us and let us know if your rotten egg smell goes away.

Keep hitting them with a hammer that will help.

Keep digging that hole, because soon, every one will stop throwing you ladders and start pissing in the hole.

JHFC

 

[E=MC2]

Someone should put the box of rotten eggs back under the driver seat

 

[NoahsArk117]

You have bitched about this before and, if I remember correctly, everyone told you what is going on.

SO, I will tell you AGAIN. A catalytic converter is basically a filter. At hard throttle or WOT the catalytic converters CANNOT process the the amount of exhaust/fuel as designed and will EMIT a sulfuric smell and it will get worse the hotter they are. EVERY F'NG TIME!!

With a clue as to what a catalytic converter is and how it works, go study (GOOGLE) on that for a few days, then go spend $2500 on some long tube headers WITHOUT CATS, then get back to us and let us know if your rotten egg smell goes away.

Keep hitting them with a hammer that will help.

Keep digging that hole, because soon, every one will stop throwing you ladders and start pissing in the hole.

JHFC

Fair enough

 

[Zrussian13]

Remove them.... non existent problem solved!

 

[ice445]

I suspect the power pack tune has more to do with it than anything else

 

[Avispa]

Stand behind your car right after a cold start up. You'll smell the same rotten egg odor. There's still some sulfur in gasoline. The cats clean up most of the hydrocarbons, and nitrogen and sulfur oxides in the exhaust, but when the mixture is rich (WOT, cold idle) you WILL smell sulfur. A lot of us were unhappy when the 1975 models hit the streets, first year for cats. That sulfur smell was a new one.

Then again, pick your poison - if you take the cats off, your exhaust will stink like an old, pre-cat car. You may like that smell a lot less than the rotten egg odor. And yeah, I can smell a de-catted car a long way off in traffic.

 

[Shifting_Gears]

Getting your cats hot enough on a normal basis should help “reduce” this. There is going to be some inherent smell from the combustion process, but keeping those hydrocarbons burned off due to high exhaust temps would probably reduce the sudden smack in the nose when you go WOT after not having done so for a while.

Sponsored