The air filter a K&N that I clean/oil every 6k miles. I totally forgot about the plugged line while I had the fairings off this weekend. I'll pull it apart again, fix the hoses, and report back in a day or two. It may be Saturday before I get time to do that.
This is kinda what I speak about, on doing diagnosis over the net.. and the propensity for "left out" stuff to prevail...
When I hear stuff like this all, i first off ask..
"are you using a K&N, and how did you oil it?"but, as Marty asked, and no response was made... I moved on, and didn't keep poking.. I should have. Marty has been here long enough, and knows the first thing we will ask is....;
Assuming there hasn't been an after market foam oil impregnated air filter being used, I'm drawing a blank....
maybe i should have asked you to 'mop up the oil', and show the oil (on the rag) to us, instead of just saying mop it up and continue on.. my fault for not doing so.. but, if it was reddish, it would have said a lot, if it was just oil mist, yellowish, still would have told me "crank case vent".
Now, It's revealed you have in fact, a K&N, and have been "servicing it" at
6k mile intervals...I have no idea how much oil you are applying, but, by Assumption once again, i assume you oiled it when you installed it... (these come pre-oiled... no further oiling was required...) and any cleaning and re-oiling, was done using the "plastic bubble filled with red oil" that came with the filter... and
everytime it was oiled, you made it look "RED"... K&N's, when used in cars, have a huge airflow duct, and most over oiling deposits along this duct.. In this bike, and all others, any over oiling will end up in the airbox. It will also affect performance, and in the case of a C14, even coat the sensors in the airbox...
The filters as they come, are designed for LONG miles between services, every 6k is telling me it has always been over oiled.
The good side, is that whatever air is passing thru the filter, is in fact clean, and dust free.. the downside is, a lot of oil vapor (not bad) is being sucked in also, and as the filter does it's job, and begins holding more dust, the engine wants to 'draw air', which it seems to have been doing thru the crank case vent line also...
I've used these filters in ALL my bikes since 1973.. and I still have the can of aerosol oil, which has been used on every filter, for thousands of miles, sitting half full on my bench.
I've tossed every "plastic bubble" of oil, into a bin, and probably have 20+, which were never used.
after cleaning a filter, using concentrated dish soap, and hot water, and drying the filter completely, I 'spray' the cotton untill its "PINK", not dripping red..(and not from 3" away like they show) which is what K&N says is correct... Red, on a bike filter, is simply too much oil.
https://www.knfilters.com/instructions/18627C_inst.pdfhttps://www.knfilters.com/blog/ask-the-experts-at-kn-how-to-use-kn-air-filter-oil-how-much-oil-do-i-useI don't use these filters on my C14, but do use them on everything else...
Pink is good
Red is over oiled.
pick up the aerosol spray, it's tons easier to use, and use correctly.
Please don't take this as something we (I specifically) are/am saying as something other than we always attempt to help, and now you can see a bit of how difficult it is to ascertain, and diagnose across the continent, via a computer, and actually you are learning something it took years for some of us, to figger' out, and put into simple terms...
it's that 'free prize' thing I always used, when sharing info.
best of luck, and I think you are well on the way to a better running bike.
Ride safe,
