so with getting a k&N soon as well as needing to fix some things that I've been putting off, I took the thooperhawk apart again. Well I open up the airbox and looky looky, oil in the bottom. Now I had seen small amounts of liquid in the box before but always thought it was gasoline spitting up through the carbs that'd happen whent he carbs would cough. Well this is DEFINETELY oil.... so uh wouldn't the only way that'd happen is if I have bad rings? i really have no clue but it was quite a bit and it's only discouraging me more.... i recently sqitched to synthetic 10w-40 but the fluid had been in there before I switched....

 

i opened my airbox today as well and found some oil...not much but definately noticable. my old VFR had the same thing happening.

 

It can be a combo of a couple of things.... First if you got a KN filter, that itself has some oil in it (new and if you recently cleaned it and oiled it), and also don't forget those big breather tubes coming off off the head/valve covers that connect into the bottom of the airbox.... Unless you got puddles of oil in the box, I wouldn't be too worried....

 

no k&N. yeah forget about them breather hoses... duh. k&N will be put in soon. as long as it isn't out of the ordinary I'm good. I just thought it was gas before...

 

It's normal- comes from blow-by in the engine- it vents into the airbox so the fumes are burned by the engine instead of venting to the atmosphere.