I've got a fuel tank with a crud- and rust-blocked drain. The drain tube is about 1/8-inch (or perhaps a bit more) inner diameter, and snakes through the inside the tank from the recessed rim of the filler opening to an outlet beneath the tank - I assume it's for draining water that settles there.
I can move a small amount of air through it, but compressed air doesn't blow it clear. I fed a strand of solid copper wire in each end, which loosened a lot of shit I can shake out, but I can't push it all the way through.
I'm trying to sort out a way of clearing it, and I thought that I might try a broken speedo cable chucked into a drill as a reamer, sort of like a plumbers drain snake. Anybody have a worn or broken speedo cable hanging around they'd like to part with?
Or other suggestions?