Well i already treated the diesal. And thanks todd. You confirmed which tool i was already leaning towards. But i have a plastic brush on what looks like twisted wire. That will get it clean. How can i tell when the valves are closed on any given port? And also i have alot more gunk than that. The car has 267k and i can tell its never had this kind of owner tlc. If i were to gather it all up in a ball, i could easily stack it up to a softball or bigger. Took quite the heat to burn out, and the flames were feet from the aluminum.