Touringman
Cruisin' Guzzisti
It looks like that if that fitting is the one pictured below, it should have a drain tube #20 in the attached image below. It's the base of the battery tray/Evap cann & breather assy. I'm leaning more towards my post above. I'm not saying the drain plug isn't the issue, so be sure to check it, but that it may likely be a what I stated above about an overfill.
View attachment 9159
Guys, look carefully at the exploded diagram Todd posted. Look at part #7...there is a small nipple extending down from the left front lower corner of this box. IF (its a Guzzi, thats a big if) IF Tim's bike is like mine, the clear tube that catches the blow by extends down from this nipple. This nipple is BETWEEN the air filter and the throttle body. The nipple Tim photographed is AT THE BACK of the battery box, in the corner on the left side sort of UNDER the battery by the frame cross-member. I always thought it was just a water drain and mine, like Tim's, has no hose. THE DIAGRAM IS INCORRECT. Hose # 20 attaches to air box #7, NOT the battery box/front part of the fender.
If Tim is getting oil out of the back nipple, that could mean that his drain tube is full (or otherwise blocked) and the blowby is running out of the air box down into the battery box. It is possible the filter half of the air box is not seated correctly, and the oil is just running down and dripping out at the lowest point. Anyone who has done it knows that seating that filter correctly and getting the clips from hell clipped correctly is a huge PITA.
I believe Todd's analysis is correct, I can't see any other way to get oil into that battery box area.
Kirk