exhaust spraying black shit

[Aussie Steve]

Looks like carbon...probably a good fuel system service will sort it. Try a can of cleaner through...I use one about every five to ten tank fills or so. Some reckon they do sweet FA but it cost virtually $5:00 a hit so IMO its not enought to worry about cost wise and it doesnt do any harm.

It could be as simple as carbon build up in the exhausts and any lengthy periods between running have caused it to dry out and flake off.

As for the smoke...again if there are no other issues I wouldnt be too worried unless it go severly worse.


Edit...if the stuff is wet and oily then further examination is required.