Posts
155
Joined
4/30/2010
Location
Annapolis, MD
US
Edited Date/Time
4/14/2014 5:01pm
Hey guys, for those of you who own a 2012 Crf 450 or are familiar with this issue please chime in.
I just noticed that there seems to be oil coming out of my air box. I removed by filter and noticed a small pooling of oil at the bottom of the boot, and also have noticed some of that overflow leaking down onto the swing arm. This bike only has about 20 hours on it and no major wrecks minus the occasional tip over.
Any idea on what this is?
Yes I know there is the "Race Shop" forum, but I figured I would check here first since there are quite a bit more viewers.
Thanks in advance
I just noticed that there seems to be oil coming out of my air box. I removed by filter and noticed a small pooling of oil at the bottom of the boot, and also have noticed some of that overflow leaking down onto the swing arm. This bike only has about 20 hours on it and no major wrecks minus the occasional tip over.
Any idea on what this is?
Yes I know there is the "Race Shop" forum, but I figured I would check here first since there are quite a bit more viewers.
Thanks in advance
I have had it happen but it is usually when my bike sits for too long between rides when the garage is hot. Since you are in DC and I doubt the temp is too warm just yet I would guess the filter was just over oiled.
The Shop
This happens because one of the engine breathers goes into the airbox.
Also, you may have overfilled the crankcase... If that's the case, be happy you haven't blown any engine seals...
I never had an issue with the aerosol version of no toil. But when I use the liquid version I always end up with a puddle if I let the bike sit for a while.
Not sure if that happens with conventional filter oil.
Not really an issue with oil migration since I put a clean filter before every ride. But kind of annoying because that stuff is hard to remove from the garage floor (unless you use the cleaner)
This seal keeps the crank oil separated from the tranny/clutch oil.
If it goes bad the tranny oil gets into the crank oil and causes an overfill situation.
This extra oil gets frothy from the crank beating the shit out of oil that is to deep,the cam chain carries. It up to the rocker area .
It will blow out that vent tube into the airbox.
Drain both cases into a ratio rite or similar to check volume and either confirm or eleminate this seal.
Thanks!
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