My other neighbor just bought a AC 190 gasser that has been sitting for a few years. The carburetor on that was lined with rusty gunk. It almost looked like antifreeze crystals to me, but would not know where that would come from. I took it apart and soaked it in vinegar overnight. I came home tonight and the brew was bubbling, it cleaned up pretty well. The top half looked real good, so I am soaking that along with the small parts in cleaner tonight. I put the bottom in some fresh vinegar and will let it soak another night.
It really seems to be cleaning up nicely, the inside is coated with black ooze, that I assume is iron oxide.
It really seems to be cleaning up nicely, the inside is coated with black ooze, that I assume is iron oxide.