I founde oil pooled beneath my air filter on my 01 bonnie and wondered if others have had this. It seems that it would have to come through the rings or the hose from the crank case to the airbox. Any ideas?
On earlier bikes there is an oil seal behind the clutch cover that needs changing every once in a while. When it starts leaking, a pool of oil slowly builds up in the bottom of the airbox from the engine breather tube.
After I removed the air box, attached a very basic crank case oil breather filter to the hose. After some riding there is a bit of oil reside around the area of the oill-crankcase filter. During the 90 degreee days I will even see a small drop of oil on the floor under the vent filter. Anyone have a better vent filter?
Its pretty common. The early modles "slinger" was modified later on. Unless there is a massive amount- not to worry! If you drop her - it will do it as well. However there could be a broken "plastic" blade on q1 of the slingers & that could cause the problem? Massive= worry. Spotty= not to worry. Wipe it out & forget it! Enjoy the ride as well!!
as pieman said you have a breather oil seal thats going bad my 03 had the same thing .Once you change it it will stay dry.they changed the breather set up on the newr bikes .The seal thats bad runs on a breather peace thats bolted to the end of the crankshaft. drain your oil pull clutch cover the seal is at the end of the breather tool.All you need is the seal and a clutch cover gasket.If the bike has never been apart you might want to replace the shifter seal and the clutch shaft seal while you have the cover off.
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