Reply To: Confused about airbox vacuum lines and breather routing – Help – GT250R 2006
Ahh okay , i got you.
For each nipple, hyosung puts a clear cap called “Airbox Oil Catch Tank Cap” like you see #6-7 below
However it is not a part easily obtained on its own, so grab a clear hose and clamp it there , then block the other end of the hose and clamp it.
At least both holes will tell you if there is oil deposits inside the clear tubes (about 4cm long max is good enough)
Regards