hose from valve cover to airbox  By  ilovenxstage (Read 967 times)

Awesome, thanks.

From what I've been told, it's a mixture of oil and a little bit of gas that makes it past the valves. Hence the light, frothy consistency and gasoline smell.

That being said, my original airbox was attached to the carb with a plastic elbow joint that had an unused nipple on it. When I got my free flow filter, I cut that joint off the old airbox and attached the filter to that. I rerouted the breather tube from the valve cover to that extra nipple, so it's recirculating the mixture back through the carb. It's not any better than the catch can or fuel filter ideas, so I'm not advocating this as scooter gospel, but it was an easy solution with nothing additional to buy.

There might be concerns from people about it fouling the plug or hindering performance. I've had this setup for about 500 miles now, and I recently did a plug chop and didn't see indications of fouling. I also haven't noticed any decreased performance or ignition blips which would indicate poor combustion. And after all, back when the hose was on the stock airbox, the gloop had soaked through the foam filter and was being sucked into the engine anyway.