[badbrakes]

Hey Brian R.

Right on with your question. I think it came from the 2 hoses that connect from top of valve cover to the intake manifold plenum. So I suppose over time, small mists of oil vapor accumulates in the intake air chambers. That may answer where it came from... as to the more important why, I have no idea... is it normal or poor design or something else broken... just don't know. I'm kind of taking the approach that if it took 210K to gum up that badly and I've just cleaned it up thoroughly, it may take at least another 100K to get as bad... so I would just add this item to regular maintenance and do while doing timing belt type of thing. HOWEVER, if someone has the answer as to why the gumming happens, I would sure like to know....