My friend has a 1994 Mojave 250. After riding for about 15-20 minutes, oil begins to enter the airbox through the small black tube connecting the motor and airbox and leaks out the drain tube. It is worse with synthetic oils. I have a 2001 Lakota Sport and it does not have this tube. Does anyone know if it is possible to plug the tube on the mojave without causing problems? I was also thinking of using a longer tube extending the distance 6-8" up and then back down to the original location on the airbox. Any ideas?
Thanks
Lakota300cr

 

plug it off and the motor won't last long. that tube you talk of is the crank case ventalation tube, ya it's kinda important

 

hay 300cr, long time no see!

The lakota's runs on the right side of the frame up obove the right front tire, it just vents out in the air.

I use a crank case breather off a honda XR100 and it stops the oil entering the air box. The lakota and mojave put out high cranck case preasures so plugging it will be very bad. Synthetics and wheelie's make it worse.

 

I had that same problem with my 01 Mojave.Turned out to be blow by past the rings.My cylinder barrel was oval.Your friends could just be plain worn out.Since I rebuilt it I have NO oil in the box.