Someone told me after looking at my rear pipes that if I have black soot (which I do a little), then I'm running way too rich. Is this the case? I'm pretty sure just about every car I've owned had the black soot in the muffler pipe - including a lincoln I've owned before which passed emissions OK. Is this something I should be worried about? It's pretty cold here and I can see the exhaust is just white, not blue-ish.

I have a CAI, dual exhaust and superchip mod (performance program) installed. Has anyone had any emissions problems with their big D's recently?

Appreciate any input...

--Jack

 

Black smoke is unburned fuel. Blue is oil. White is water. When you first start your car you burn extra fuel causing this color. If you pass emissions then I wouldn't ever worry about it. But in doubt replace your spark plugs