I went to clean my throttle body butterfly today because of the dreaded "pedal stick". However, when I went to clean it, i noticed the entire upper intake manifold, and I assume all the way down to the valves is coated in the black gunk.
What causes this?
I am not having a problem with oil consumption. I don't mind cleaning the stuff, it just seems to me to be a problem with this much goo coating the intake surfaces