i just put my ASMs in the other day as some of you know, and the truck is running very rich. iam getting the flanges welded on tommorow and the exhaust all buttoned back on.

anyways, i pulled the spark plugs 2 days ago, and they were filthy black.

they are brand new ngk 55s. i put them on doing the header install.
will they clean up on their own driving the truck after a while with the exhaust all hooked back up, or should i change the plugs out to new ones again.

also, whats a good way to clean my o2 sensors? just use a terry rag?

thanks in advance
todd

 

Try cleanin the plugs with carb cleaner and they should get the carbon build up off of it and problem make them look good again. As for the 02 sensors I have no clue. Good Luck

 

use a wire brush and the carbon should come off easily on the plugs as for the 02's I know they are very sensitive to air hitting them and thats what has happened running open headers. I would wait and see after the exhaust is closed up if you cant get the afr right on or the truck runs spuradic trims after tuning then I would change them.