23-06-19, 12:01 PM
That pipe on the bottom left of the air box is the breather for the engine case. Pressure in the engine case is vented out through the pipe into the air box. Over time oil, water vapour and combustion gases coming out of the case mix together and can cause a build up of emulsified oil that blocks the pipe. The mayo looking goo can be from normal build up and it just needs a clean out or it can also happen if the oil level is too high so the pressure in the engine case pushes an excessive amount of oil into the air box. You should take the breather pipe off and give it a clean and look in the bottom of the air box for goo and give it a clean and check if your oil level is high. A bit of mayo goo in the air box is normal. A lot of oil isn't and would suggest the oil is over filled. A blocked breather pipe by itself shouldn't cause the bike to run rich. Do you think the bike is running rich or is the only problem that there is goo coming from the air box?