2001 honda 400ex oil coming out of crankcase breather. Just replaced the rings because I thought that's what it was. Good compression. Steady stream of air, not strong air coming out of breather. After the machine gets warmed up it starts doing it. When it's cold it doesn't. New rings are installed correctly. Engine is very clean on inside. Blocked oil hole?? I have posted about this before. Also I had it brought into a shop before Christmas and they said it was overfilled. Got it back and it never did it. After Christmas I put bigger jets in along with air scoops. That's when it started it again. Is the air being forced into the engine somehow?

Thanks

 

The air scoops are not causing this. Over filling will do it for sure. Is it over filled now?

 

No there was ONLY 1 qrt in there !

 

I forget, is the 400ex dry sump?

 

ya it's a dry sump, dumbest oil system ever