Oil leak

[Canniboomer]

hmmn, that is not an oil injection line -- it is the vent line from the left sidecover, and should not puke any oil. First thing is to convert that 4-way venting connector to a 3-way, and then isolate the sidecover ventline by itself...then insert that loose ferrule back into the airbox hole where it belongs, and where the airbox is now sucking in unfiltered air. Then start to diagnose why it is puking oil from the left gearcase cover -- overfilled?, a possible oil bridge leak? that pushes sump oil 1-way into the gearcase?, or some other issue....fun fun

[cannondale27]

Yes! Please do not even start your quad till the real problem is found. You will thank me later for that advice.