Rotten egg smell

[Ron Jefferson]

I'm leaning towards a clogged cat but just wanted the opinions from some seasoned people out there. When under load, the car has a god awful smell, I wish I could fart like that, its enough to gag you. Its a rotten egg/sulphurish smell. Its not all the time, only when going up hill or high rpms. If it is the cat should I just test pipe and get rid of the cat all together? The state the car is tagged in doesn't require inspections. Thanks guys.

 

[fixitman04]

definitely sounds like a cat problem

 

[Ron Jefferson]

Would it affect the car badly if I remove it?

 

[CyFi6]

If you are running rich and dumping fuel into the cat it will smell like that. Sounds like a problem with your fuel control rather than your cat.

 

[Ron Jefferson]

Hmmm, dumb question but what would you suggest looking at to fix that then? The car set for 3 years so the cat may be rusted shut

 

[Nick M]

That or the fuel itself. The smell is the sulfur oxidizing in the cat. Changing the cat temporarily alleviates the symptom, but is not the cause.

 

[Ron Jefferson]

The fuel isn't old and its 100% gas, no ethanol, I'm going to cut the cat and put a test pipe in and see if that fixes the problem for now.

 

[Nick M]

Old has nothing to do with it.Yes, it will fix the problem "for now" because the sulfur is no longer oxidizing in the bed. On the other hand, your gas station could always have higher sulfur than others and be below standards. And your defective cat isn't cutting it. Keep in mind, catalytic converters don't just stop working. It is almost always outside influence.

 

[Ron Jefferson]

I'm going to chalk it up to just sitting for 3 years and not being ran. We'll find out soon.

 

[Poodles]

Removing something isn't "fixing" it...