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my air filter is gassy/oily???

Hi friends, I put a 2moto kit on my 2011 ktm 250xcf-w. I have only put a couple rides on it and the air filter is wet with what fills like oil, but smells like gas. What is going on? My bike has 70 hours on it, has been a great desert bike. Checked the valves 2 rides before doing the kit and they are right in spec. This makes me scratch my head though. Has anyone else dealt with this? My bike is carbeurated not fi. Thanks in advance!
 
Have you rerouted the vent lines from the carb and crankcase up under the seat?
 
No I havent done that. I pulled the hose and sure enough thats where the oil is coming from. Does the snowbike kit/cold weather create more blowby? Is that what I need to do, plug the where it goes into the carb and run a vent hose under the seat? Im definitely new to this sport. Thanks for any advice.
 
Don't plug them. Just run them up under the seat and tie them. The motor needs heat to burn off the over fueling from the cold weather and the snow around the engine. you could try taping the rads off and remove tape when the motor gets too hot.
 
up-high, thanks for your help and input. I apologize for my newby questions. Now just to run through what I need to do again, I have 1 crankcase breather hose. It runs from the nipple on top of my valve cover down to the back of the carb and slides on to a nipple there(right before the the airbox/filter attaches to the carb). If im understanding correctly I should unplug the hose on the carb end and run it up under my seat? So the crankcase vent hose would then just be venting to the atmosphere. This leaves the nipple on the carb open, I assume I would put a plug on it? Now for the carb lines. Currently they hang down behind the motor/infront of the swingarm. Ive noticed they ice up down there. Should I pull them all up so they are venting up rather than down and tie them under the seat? I also had a question on overfueling, I havent changed any carb setting, how does the cold weather change my fueling? Seriously thanks for your help, I will route as you describe, I just want to make sure Im notmissing something. Thanks!!!!
 
You can leave the crankcase hose where it is. The only ones that can plug are the ones that hang down infront of the swing arm. Just run them up under the seat and zip tie them there. If your bike isn't fuel injected you won't over fuel.
 
up-high, thanks for your help and input. I apologize for my newby questions. Now just to run through what I need to do again, I have 1 crankcase breather hose. It runs from the nipple on top of my valve cover down to the back of the carb and slides on to a nipple there(right before the the airbox/filter attaches to the carb). If im understanding correctly I should unplug the hose on the carb end and run it up under my seat? So the crankcase vent hose would then just be venting to the atmosphere. This leaves the nipple on the carb open, I assume I would put a plug on it? Now for the carb lines. Currently they hang down behind the motor/infront of the swingarm. Ive noticed they ice up down there. Should I pull them all up so they are venting up rather than down and tie them under the seat? I also had a question on overfueling, I havent changed any carb setting, how does the cold weather change my fueling? Seriously thanks for your help, I will route as you describe, I just want to make sure Im notmissing something. Thanks!!!!


The oil is likely coming from the crankcase breather. My CRF used to be routed like you described, and my filter and airbox (when it was still on the bike) would be covered in oil after a few rides.

I bought a "clean air kit" from tokyo mods to remedy this. Basically it just replaces the stock crankcase breather with a longer hose that hangs down below the bike, where your carb vent hoses are, and plugs the hole in the air boot.

You could save a lot of money doing this yourself by buying a longer chunk of hose and a plug of some sort. I wouldn't bother with routing it under your seat, it will spit oil all over everything below it. Just vent it out the bottom of the bike. It is big enough and has hot air flowing out of it, so it won't ice up.

Carb vent lines are different. I have had efi on all my snowbikes so I haven't had to deal with that.
 
Even the Hawks bleed back through their pods, wide open throttle wastes gas. The pods get oily because ours is mixed, four strokes are probably siphoning the crankcase by new or worn rings since they make their compression on the up. This could also be the culprit if you assume burning, leak down will confirm.

I am not a certified mechanic but every Snow Hawk does this.
 
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