Advice please on cleaning headers?

[HornetBoy]

Gidday all,Anyone with any tips or tricks on cleaning the "gunk" outta header pipes ? eg liquids etc
Thanks Chris

[Hitcher]

Cleaning the inside of headers?

[HornetBoy]

Yea,Cleaning the inside carbon deposits inside the header pipes..

[xwhatsit]

I didn't know that was such an issue on four-strokes? Is it?

On two-strokes yes, but I haven't heard this being part of a four-stroke's regular maintenance cycle, unless it's running excessively rich?

Interested.