leaking?

[exrider12]

alright, well a few months back i bought a used cr85 with a brand new top end. where the expansion chamber meets the cylinder or exhaust collar? i think it is,it leaks a slugde/ oily black stuff.
I just bought a full pro circuit exhaust and was wondering what i needed to stop the leaking or should i see if the new exhaust stops it? i think it may have been running rich and this might help because it even shot oil out of the silencer.any idea?

[exrider12]

any one?

[ZeroLogic]

O rings on the expansion chamber might be shot along with the springs. Running real real rich on the oil may do it too. If your gettin spooge either fix your jettin or fuel mixture or twist a little more.

[exrider12]

im running 32:1.i know its running a little rich casue it bogs alot and im hoping that the procircuit pipe will fix that.

[PhilMoore]

Try one of these, or get new o-rings for your existing flange:
http://www.swedetechracingengines.com/parts_accessories/cr80-exhaust-flange.html