I have a over powering rotten egg smell comming from my truck but no check engine light, and the fuel milage seems to be getting worse. I was wondering if it was the cat. and if i should just cut it off and run straight pipes 2000 Superduty 7.3 152,000 miles 4x4 automatic supercab

please help

 

Chriss,

Welcome to FTE,

If you try a quick search here on FTE you will find many threads on the rotten egg smell with diesels.

(Here's the advanced search link)
In the Keywords box (top left) type in "rotten egg" with the quotes.

The search link is near the top of each page. It's usually best to use the advanced search.

Rick...

 

running too lean

 

Prob cat..... remove it (just to test) to see if your power and mileage return.... (wink-wink)

 

Decided that my comments didn't add any value to what was already said. Can't delete my post, so instead I'm just going to waste this space with a smiley.

 

99 to 03 7.3 dont have cats

 

the smell was the batteries they had gone bad. they were out of water and very swelled I replaced them and everything is fine. But I cut off the muffleranyway