[Big Island Bump]

My air filter tube and K&N filter are getting oil in them. I have tried blowing out the line from the PCV valve and if this works it is only for a short time. if the line clogs does the oil get sucked in from the vent at the front of the valve cover? I want to install an AEM that I picked up for it but would like to solve this problem first. Any help would be appreciated.