Question about 2006 Harley Davidson XL 1200 R Sporster Roadster

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Oil blow out the breather

What would cause oil to blow out the breather on a Harley Davidson Sporster 1200 motor?

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  • Anonymous Mar 19, 2014

    Oil is coming from my breather on my Harley 1200 sportster

  • Anonymous Mar 20, 2014

    how to fill front fork oil on 87 harley sporster .

  • Anonymous Mar 28, 2014

    What causes the kickstart on a 1965 Harley Davidson XLCH to operate for a while, then pass through with little to no resistance?

  • Anonymous Mar 31, 2014

    My 1985 harley ss is puking oil out vacume line and blowing oil out thesides of motor been sittin cuple years



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An overfull oil tank will do it. Even if not overfull just about all harley's will blow oil out the air filter. Unless there is a bunch of oil coming out, it's not a problem What I've found is that the air filter eventually gets saturated and then starts to leak through. The level in the oil tank doesn't seem to matter. If you change the air filter the problem goes away, until the new one gets saturated and then it starts all over again. My plan is to get a K&N air filter, which you can clean yourself and save having to buy a new air filter every 4,000 miles or so.

Posted on Nov 20, 2008


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Posted on Jan 02, 2017

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SOURCE: oil blow out the breather

too much oil; bad umbrella valves in rocker covers;

Posted on Mar 23, 2009

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I have a 2006 sporster low getting some oil in my

I found this article that should help you alot with theory part of why this is happening.'
It's from a sportster but an older model than yours. Take a look and see if you can get it cleaned up.

Good Luck and Thanks for using FixYa

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7 Answers

Oil blow out the breather

This is a common problem on all sportsters, they have an oil blow by that dumps it into the air filter. I have found that if I run about a half quart low the problem goes away.

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