Back to all

No Yolk! Rotten Egg Smell (Sulfur Smell Causes)

January 16, 2022

The pungent smell of rotten eggs can send people running for the hills.  So when that odor is inside your vehicle, yikes!  Yolks!  The good news is that a trained service technician can search the source of that smell and stanch the stench… that comes from another words that begins with S.  Sulfur.

Fuel contains small amounts of hydrogen sulfide, but they're enough to stink up a vehicle when it's not properly burned.  You may know that the smell of rotten eggs can often be a sign of a catalytic converter that isn't working the way it should.  That could be due to age, damage or an abundance of oil that's clogging it up. 

If a sensor in charge of managing the fuel has failed, the engine can run with too rich of a fuel mixture.  That can overload the catalytic converter and allow some of the byproducts to escape without interruption from the chemical reaction that is supposed to prevent them from going out the tailpipe.

There's another possibility, but it's usually only in stick shift vehicles.  That's leaking, old transmission fluid.

Catalytic converter repairs are best left to a professional. Technicians at your vehicle service facility have equipment and training that can help them pinpoint the cause of this funky fragrance.  Once the cause is found, repairs made and/or parts replaced, the smell should go away fairly rapidly.

Tuffy South Fort Myers
18092 S. Tamiami Trail
Fort Myers, Florida 33908
239-489-0010
https://www.tuffysouthfortmyers.com

Need Service?

Request a Quote

More articles from Tuffy South Fort Myers

The Tuffy South Fort Myers Basic Guide To Synthetic Oil

December 28, 2025

Synthetic motor oil has been around for a long time, and more and more new vehicles are leaving factories with synthetic in their engines. But a lot of drivers don't really know much about it.Let's start with conventional oil the kind folks are used to. Conventional oil is made up of naturally o... More

When "Oh, no!" Turns Into, "All right!"

December 21, 2025

Things we don't expect happen to our vehicles. And let's face, no one really wants to spend money on an unexpected repair. But if you are putting off going to your vehicle repair facility because you're dreading bad news, you might just be putting off some good news. There was one minivan driver ... More

Steering Clear in Fort Myers

December 14, 2025

Those who know vehicles believe the steering system may be the most vital component of them all. Perhaps you've found over the years your steering has gotten loose. Or maybe suddenly, your steering wheel has gotten very hard to turn. Let's steer you in the direction of understanding why this may ... More