Joplin, Missouri

Engine Repair in Joplin, MO

Purcell Tire & Service diagnoses and repairs engines at 4736 E 7th in Joplin. Call (417) 623-5789, Monday to Friday, 8:00 AM to 5:00 PM.

A rotten egg smell from the exhaust

Some engine faults announce themselves through the nose before anything shows on the dash. One of the clearest is a sulfur smell, like rotten eggs, from the exhaust, usually most noticeable after hard acceleration or when the vehicle has just stopped.

That smell comes from the catalytic converter, the part of the exhaust that cleans up what the engine sends it. Fuel contains a small amount of sulfur, and a converter working normally deals with it quietly. When the engine sends it too much fuel, or the converter itself is failing, the sulfur comes out as a smell the whole street can notice.

Too much fuel is the more common cause, and it is worth catching early. An engine running rich wastes fuel, can foul spark plugs, and overheats the converter, which is an expensive part to lose to a fault that started somewhere cheaper.

Things to note before you book

  • When the smell appears: after acceleration, at idle, all the time, or only when cold.
  • Whether fuel economy has dropped recently.
  • Whether there is any warning light, and whether it is steady or flashing.
  • Any change in how the engine runs: a rough idle, hesitation, or less power.

A smell that came on right after filling up at an unfamiliar station and fades over the next tank is less of a worry than one that has been building for weeks. Say which it is.

What this store covers

Diagnosis comes first, because a smell is a symptom with several possible sources. Confirm the vehicle when you book, so the store can tell you what it can work on. A fault that turns out to be the cooling system, or a missed item on scheduled maintenance, stays in the same building.

The national engine repair page covers what a warning light does and does not report.

Other stores nearby

Springfield and Springdale, AR also offer engine repair.

About this store

The Joplin store is managed by Travis Reeder.

See the national engine repair page for all 33 locations.

Questions

Engine questions, Joplin

My exhaust smells like rotten eggs. What does that mean?

It usually involves the catalytic converter, often because the engine is sending it too much fuel. Have it diagnosed.

Is it urgent?

Not usually an emergency, but do not leave it. A rich-running engine wastes fuel and can damage the converter.

Could it just be the fuel?

A smell that appeared after one fill-up and fades is less concerning. One that keeps building is worth a diagnosis.

Which vehicles do you work on?

Confirm the make, model and type when you book, and the store will say what it can take on.

Book a diagnosis in Joplin

Call (417) 623-5789 and describe when the smell appears.