Funny egg smell???

ggweci

Member
:
2003 Protege5
when driving on the Highway at about 100-120km/hr (60-70mph) i notice a faint "egg" type smell coming into the car...it only happens at these speeds and it is not very strong...any ideas as to what could cause this? should i be worried?
 
the egg smell is the catalytic convertor, may want to bring to dealer, the egg smell comes on when the cat is bad so you notice and take it in...
 
pdhaudio said:
the egg smell is the catalytic convertor, may want to bring to dealer, the egg smell comes on when the cat is bad so you notice and take it in...

YUP! It's the cat!
Rotten Egg smell is a classic sign of a convertor gone bad.
If you don't have it looked at,it is possibble for the cat to become completely clogged and cause the engine to bog and not run at all.This should be covered under warranty no matter the milage of your car as the Federal law mandates ,I beleive,All emission related components must be warrantied for a period of 7 years.
I think this is true,Not 100% though.
Matt:)
 
Yeah, I get that about 5 hours after eating 3 hardboiled eggs. Just open your windows and you should be fine in a minute :D
 
It's normal

The sulpher/rotten egg smell is normal for these cats with low mileage. I've been told that it may take 30,000 to 50,000 miles for the smell to resolve (as the cat "matures"). I know several folks with the same aroma including mine. Nothing wrong with the cat. Changing your brand of gas sometimes will help.
 
never never heard that before, sounds kinda bs, so all the new cars are supposed to smell like egg till they hit 30-50ks?

i dont think so. did the dealer tell you that? prolly so they'd avoid the warranty costs.
 
HERE'S INFO FROM MAZDA

It's normal........



01-029/02 2000-2003 ALL MODELS - SULFUR SMELL FROM EXHAUST SYSTEM
APPLICABLE MODEL(S)/VINS
2000-2003 All Models

DESCRIPTION
On some vehicles, a sulfur smell or 'rotten egg' odor may be noticed coming from the exhaust system. The odor is usually noticed after a cold start, fast idle, extended periods of idling and full throttle acceleration. Sulfur smell is not an indication of an engine concern and will not cause reduced driveability or durability of the engine or any of its emission components.

The sulfur smell or 'rotten egg' odor is caused by high amounts of sulfur in the gasoline being used in the vehicle. Sulfur is normally eliminated during the refining process, but the EPA regulation of sulfur in gasoline differs from state to state. Vehicles using fuel containing high amounts of sulfur will most likely emit sulfur smell from the exhaust system.

When high sulfur fuel is burned, there is a chemical reaction in the catalytic converter causing the sulfur to oxidize. As the vehicle is driven, the oxidizing reaction odor in the converter will decrease with mileage and age.

RECOMMENDATIONS
CAUTION: Replacing the catalytic converter will not eliminate sulfur smell and replacement will just extend the period of time needed for the converter to 'age' allowing it to reduce sulfur smell to an acceptable level.

Switch to a different brand of fuel and drive the vehicle for at least 100 miles. Monitor the decrease or increase in sulfur smell.

Do not add any type of 'fuel additive' as this could add sulfur to the fuel and cause/increase the odor.

Try to avoid extended periods of short trip driving or aggressive acceleration.

Request information from your local fuel dealers on the amounts of sulfur in their gasoline. Try to use fuel containing the lowest amounts of sulfur.

Visit the EPA and gasoline company websites to stay informed on any changes in fuel or environmental regulations. A website to check is:
www.epa.gov

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