Reply To: White smoke 2008 Gt250r carbed Apr 10, 2023 at 6:33 AM #10113 Simon👤 Member Topics: 1Replies: 353 If you have left the one way valve block in line then the crankcase cannot vent, at the back of the crankcase is the vent pipe that goes to the valve just remove from the valve & vent it to atmosphere.
