kalli

same here: condensation. i only have that in the colder months of the year

Colorado_Mustang

You'll get some soot (the black stuff) build up in your exhaust naturally. Modern lean-burn cars even get some soot buildup. The condensation dissolves this good stuff and sprays it all over the place. Carb'd cars will build up soot faster, but that's just because you want to run the carb a little on the rich side just to protect the engine over a wider range of operating temperatures (it's better on the engine to run a little rich than a little lean).

adr3naline

Mine did the same thing when I first got it, and it may still do it, I just haven't checked. Sounds like it's nothing to be too worried about though, horray!

silverblue66

My 289 does the same thing, it just started a few days ago right after the car backfired. I think it might be carbon from the backfire. also it backfired after flooding. is this normal?