No Yolk! Rotten Egg Smell (Sulfur Smell Causes)
October 6, 2019
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.
Spartan Tire Brighton
4880 Old U.S. 23
Brighton, MI 48114
8102277377
Need Service?
More articles from Spartan Tire Brighton

Today’s Headlights: Brighter, Smarter… and Harder to Replace
June 21, 2026
Maybe youre old enough to remember when headlights were essentially all the same on every vehicle. They were so cheap and easy to replace, most people could do it themselves. Those days are gone. Now, headlights put out more and better light and are more efficient. Those all contribute to bet... More

Tread Carefully: What Normal Tire Wear Looks Like
June 14, 2026
Every day we get in our vehicle and drive, we are putting wear and tear on our tires. Some wear is, of course, normal, but its important to know whats NOT normal. Not only can that alert you to potential safety issues, I can also save you money and fuel. Your tires tread (the part that contacts t... More

The Untold Truth About Blinker Fluid: Why Your Car Desperately Needs It
May 10, 2026
If youve been ignoring your dashboard, your mechanic, and that one guy at the gas station who muttered bro your blinkers sound dry, then buckle up because today we dive into the critical world of blinker fluid maintenance. What Is Blinker Fluid? Blinker fluid is a high-viscosity, luminescent com... More
