Oil delivery

[CafeTBird]

Ive had some fun with plug fouling on one of my GTRs.  Last time I was working on it and kicking, I noticed oil running out of the venturi to the carb.  Any thoughts on this?  Is there something in the oil delivery system that can get clogged?  Oil pump is new and set up properly.

[Mike Anderson]

Check valve stuck shut. If you had it running that cylinder was probably dry. Best check them before riding, an easy way to stick a piston. Just my two cents worth.
Later Mike