oil out the exhaust

streetroller · May 30, 2012

Have oil coming out the exhaust.started out with just alil puff at startup.Now rolls out smoke:tdown:.Motor sounds perfect.plug caked with oil deposit,So i pulled the head combuston chamber caked with deposit,same with piston,cylinder walls look spotless not a nick,scratch nothin?Absolutly ran good while smoking till it fianally.oil fouled the plug.no powerloss.Any ideas?Only 485 mile on this motor.

blm1984 · May 30, 2012

sounds like the oil rings collapsed

streetroller · May 30, 2012

Yeah I'm just gunna do a quick ballhone n order new STD piston & rings

crash83 · May 30, 2012

Having the same problem right now.
Put in a new plug and now it really smokes.
Looks like its time for a new top end...Damn.

streetroller · May 30, 2012

Anyone have any opinions on Namura pistons

b_700x · May 30, 2012

Rings for sure.

nekrofilliak · May 31, 2012

Namura piston are good piston. keep in mind that if your oil ring is dead it because your bike overheat... try to not let your bike reving too fast when cold .