got a problem

[hillbillyjr]

i am getting gas into my oil, and i was wondering what would cause that.
99 400ex
hmf s/o
k/n filter
jetted carb

[Rip_Tear]

The rings on your piston could be shot and allowing gas to by pass the piston. So that means you probaly need a top end rebuild, it could also be a gasket or possibly a valve? But my bet is the rings.

[northwest Texas]

I've had this happen several times on my Suzuki 500 4wd where I guess for some reason gas continued through the carb and on down into the engine.

First time it happened to me, it had filled the crankcase up completely!!!

Are you talking about just a little or a lot like my example?

[hillbillyjr]

i doesn't get a whole lot in it but enough to notice, it is not down on power or smokin.