Crankcase vent puking oil?????

[peebuck]

Hey guys

SOOOO after my rebuild on my 78 xs400 she starts fine with no choke needed and idles good however once warmed up and reved hard she Pukes oil out of the Crankcase Vent???

due to this problem I have not gotten to break in the engine.

any Ideas????

 

[drewpy]

oil level too high?

fuel leaking into the bore causing oil level to rise? (bad)

worn bores? ( do a compression test)

 

[peebuck]

My bore is good measerd everything during rebuild
i just adjusted my flots and put it back together just running to get more oil and a new filter. hope that fixes my gas problem.