Diyvehiclerepair
Sulfur is found in gasoline, and is turned into hydrogen sulfide in the combustion process. However, the catalytic converter changes it into sulfur dioxide. ... As the cat fails, it stops changing hydrogen sulfide into its odorless counterpart and the result is a strong smell of rotten eggs from the exhaust.
- Why does my exhaust smell so strong?
- Why does my exhaust smell weird?
- Can a bad O2 sensor cause exhaust smell?
- Why does my car smell of fumes inside?
- Why does my exhaust smell burnt?
- Why do old cars exhaust smell different?
- How much does it cost to replace a catalytic converter?
- What does a failing catalytic converter sound like?
- What happens to a car when the catalytic converter goes bad?
- Why does my car smell like burning when I accelerate?
Why does my exhaust smell so strong?
If you notice a very strong exhaust smell in the car then you probably have a leak in the exhaust system. There may be a hole in the exhaust pipe, tailpipe, or muffler. ... If carbon monoxide is leaking into your car this is serious as this chemical is highly toxic to humans.
Why does my exhaust smell weird?
Smelly car exhaust fumes mean that something is going wrong. It could be leaking fluids, a failing catalytic converter, or imbalanced air/fuel mix.
Can a bad O2 sensor cause exhaust smell?
Damaged O2 Sensor
If one (or more) of the oxygen sensors in your car is damaged, your engine may be using too much fuel and not enough air. This could also cause the exhaust to smell like sulfur or rotten eggs, so the presence of this smell alone isn't enough to determine what the underlying problem is.
Why does my car smell of fumes inside?
With exhaust smell inside the cabin of your car, an exhaust leak is most likely the cause. ... If exhaust fumes are floating around your car's engine, the various vents out of your engine and into your car's cabin will carry some of those fumes to the inside of your car.
Why does my exhaust smell burnt?
The smell of hot or burned motor oil could mean that a gasket or seal is failing. This lets engine oil leak onto hot engine parts. ... If the burned oil smell is coming from the tailpipe (bluish white smoke), it is a symptom of oil leaking into the combustion chamber, which means it is getting into your exhaust system.
Why do old cars exhaust smell different?
It is due to hydrogen sulphide, When the converter breaks or the filtering layers have worn down inside the converter, the sulfur is not transformed into the odorless form. If the engine is running too hot. If you have a broken fuel pressure regulator.
How much does it cost to replace a catalytic converter?
Catalytic converter replacement isn't cheap. For most vehicles, the average cost of a catalytic converter repair is between $945 and $2475 including parts and labor. The catalytic converter cost itself can be up to $2250 of that. That might be close to your car's value or more!
What does a failing catalytic converter sound like?
Rattling Noises. Your catalytic converter consists of small, honeycomb-shaped components that can cause a rattling sound when broken. If your catalytic converter is broken, this rattling should be loudest when the car starts, and should get worse over time.
What happens to a car when the catalytic converter goes bad?
Among the bad symptoms of a compromised catalytic converter are: Sluggish engine performance, Reduced acceleration, Dark exhaust smoke, The smell of sulfur or rotten eggs from the exhaust, Excessive heat under the vehicle, Some of those symptoms can also be caused by other parts of the emissions system, so it's ...
Why does my car smell like burning when I accelerate?
Burning Smell
If you smell burning, a very likely culprit is your brakes. ... If your brake pads are extremely worn out, they can also cause friction in the engine, creating the burning smell. If you're driving a manual car, and the burning smell accompanies acceleration, it's likely there is an issue with your clutch.
