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[Ultra Villa]

Forgive my ignorance, but I am not a gear head.  I had the gasket upgrade at 4,500 miles as a result of a leak and due to engine paint issues, I have a new motor waiting to be put in.  But yesterday while cleaning the bike, I notice the rear jug exhaust pipe had a lot of soot, no so much for the front, is this normal???

[Gecko]

The leak doesn't always go outside only.  Check the plugs and see if the rear one looks like it's had oil on it.

[ice6900]

maybe the mechs apprentice didnt torque up ur exhaust correctly

[sportygordy]

Forgive my ignorance, but I am not a gear head.  I had the gasket upgrade at 4,500 miles as a result of a leak and due to engine paint issues, I have a new motor waiting to be put in.  But yesterday while cleaning the bike, I notice the rear jug exhaust pipe had a lot of soot, no so much for the front, is this normal???

Exhaust carbon leak is common if the exhaust gasket wasn't sealed properly or if the exhaust flange is/was loose and or not torpued right?, or the exhaust gasket was defective? How much carbon buildup was present? I think most engines will leak slightly and you will notice it more on a silver painted heads then on the black.