Blow by filter issue
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Joined: Mar 2012
Posts: 50
Likes: 1
From: Ohio
Blow by filter issue
I moved the blow by filter for the heads from under the carb and air filter to under the engine. I rode about 200 miles today 2 up and the rear rocker box was throwing oil. The filter is between the engine and transmission, the filter is below the block to get air. I used 3/8 inch hose and a hose T and a K&N crankcase filter. Never had a problem until I moved it. The old filter was a 3/8 duel inlet. Don't understand why it threw oil. Can someone tell me what happened or what I did wrong.
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
Likes: 115
From: Boston, MA
I'm glad you posted this, I was riding and parked at work and I noticed some oil on the tank. Looked at my pant leg and it was dry. Hmmmmm
I will check the heads and their breather bolts. I have a super-E and just run a 3/8" gas line to the ground. I'm a Flippin rebel!
Sorry this don't help you, OP, but it gives me an idea what to check.
Tom
I will check the heads and their breather bolts. I have a super-E and just run a 3/8" gas line to the ground. I'm a Flippin rebel!
Sorry this don't help you, OP, but it gives me an idea what to check.
Tom
Road Warrior
Joined: Oct 2008
Posts: 1,334
Likes: 17
From: Rosamond, Cali
I have to clean my blow-by filter weekly. Else it will blow oil everywhere on the underside of the engine. Mine is mounted on a bracket bolted to the transmission, about the height of the clutch cable where it enters the transmission side-cover. I can get a week, or two, out of the filter without cleaning it. Did you clean the filter after you moved it?
Alan
Alan
Last edited by AlanStansbery; Oct 16, 2016 at 09:46 PM.
Road Master
Joined: Sep 2013
Posts: 1,054
Likes: 441
From: Tejas
Maybe there is restriction in the new filter?
Pull it off and run it and see how it does. You don't need anything on the end of the hose at all actually.
Griz
Pull it off and run it and see how it does. You don't need anything on the end of the hose at all actually.
Griz
granted mine is a bottom breather, but I run mine up and back to the swing arm...no filter, no oil even when running interstate(75+). I am thinking the filter is catching the mist and causing it to pool, rather than blow into atmosphere.
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
What did you do wrong you ask ? You never had a problem where it was and you moved it...filter could be restricting it,maybe the air/wind hitting the filter is forcing some air in or not letting it release air/ breath. Mine runs to the breather as it should be, always clean, never a mess. I just clean my K&N air breather at normal intervals.
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