[Wagonmaster Russ]

After hard acceleration, my exhaust has a "gunpower smell", what causes that? I have smelled it over the years from pther cars, what gives.....

 

[Fred Kiehl]

The mixture may be a little off. The sulfur smell is akin to the rotten egg smell. Your O2(s) may be on its(their) way out.

 

[Wagonmaster Russ]

The mixture may be a little off. The sulfur smell is akin to the rotten egg smell. Your O2(s) may be on its(their) way out.

Yeah, Sulphur is more accurate. The o2 sensor is new and heated. I'm running EBL and still dialing in the new motor, better post my latest datalog for rBob or rocko350 to look over.

thanks

 

[Gregg-O]

Yeah, The o2 sensor is new and heated.
thanks

And ACDelco I hope.

 

[cletus284]

A sulphur smell can be the catalytic converters not working properly.

 

[Wagonmaster Russ]

The Cat isn't very old, but it is a high flow unit. The sensor is Wagner but according to my data logs it seems to be working fine. Most likely I just need to keep tuning it in, I have been dialing in the low and high rpm cruise settings but haven't worked on WOT at all.