Oil Blow By, Overfill or Other?
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Cruiser
Joined: Jun 2015
Posts: 104
Likes: 2
From: Olympia, WA
So I dropped a new proper filter in, and lowered the oil level to see if I could just get a better look at things.
It is still backing up at the top of the oil tank. What it really looks like is the oil coming in from the return line is too aerated or coming in too fast for the filter assembly to handle. When i pour oil in by hand slowly it drains through the filter just fine, but from the return line it just piles up faster than it can get through and then pressurizes around the oil cap and return hose fitting.
It is still backing up at the top of the oil tank. What it really looks like is the oil coming in from the return line is too aerated or coming in too fast for the filter assembly to handle. When i pour oil in by hand slowly it drains through the filter just fine, but from the return line it just piles up faster than it can get through and then pressurizes around the oil cap and return hose fitting.
Stellar HDF Member
Joined: Jul 2017
Posts: 3,333
Likes: 1,280
From: Ky
Theres a vent hose near the oil pump, factory ran those to the breather? Most people run them under the bike? Some put a filter on them? Those cute little filters clog and blow the dipstick out.https://www.knfilters.com/search/pro...qzCh2C9AtSEAQY
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
you need to go back to the original part flow filter that it came from Harley with - the paper filter with the spring does not work on some machines
believe what you want about that but until you g0 back its not going to work correctly
your oil pump could be worn out as well but I would part flow filter first and see what happens
believe what you want about that but until you g0 back its not going to work correctly
your oil pump could be worn out as well but I would part flow filter first and see what happens
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