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  #1  
Old 10th November 2009
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Default oil leaking from breather on a 1995 883 sportster. will it stop?

here is the problem the best i can word it, i have an excess of oil leaking from my air breather. from what i understand oil bypass in the top end is directed into the breather to be "recycled" or burned instead of dripping onto the ground as in days of old. i am getting a build up of oil in between the jugs as the oil leaks out of the breather instead of being burned or sucked back into the carb. anyone have some solutions? thanks for your time.
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Old 10th November 2009
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So its not comming from the manafold (front right side of motor)? If so that normally has it's own filter or a tube running back and under the bike!

That is normal (from what I know, which is very little) but it happens to mine too!
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Old 10th November 2009
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Where, EXACTLY is the oil coming from?

It sounds like excess oil at the breathers...

What is the level of the oil in the tank when hot?

Try running it lower....anywhere on the low side of the range ought to stop excessive oil from coming out of the breather...assuming no actual problems...
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  #4  
Old 10th November 2009
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Gotta be you cause the "factory" would NEVER sell a product with such a problem for year after year.
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Old 10th November 2009
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The heads breath into the air cleaner from the factory for EPA reasons. The two bolts holding your air cleaner to the heads are the breather bolts. Inside the head are umbrella valves which are little rubber valves which help to separate the oil vapors from the air. Some oil droplets will exit the breather bolts with the intended path into the carb intake which is then burned off in the engine. The umbrella seals tend to wear out and need replaced after several years. You will need to replace those. Another option is to get a head breather kit (even the dealer sells one) and install which then directs the oil mist to the ground. One thing I would do for sure is run a compression test and leak down test on the engine if the blowby is excessive to rule out internal engine issues.
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Old 10th November 2009
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Quote:
Originally Posted by bykerbrad View Post
well said.. How many times are we going to have to answere this same question
He's only been on the Forum less than a month and it's the first time he's asked that question.
Would it not be better to point him in the direction of the search function if you cannot help

PS: The google search at the bottom of the page is better than the search function at the top for most things
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Old 10th November 2009
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It has been answered already but lower your oil level a little or just wait and it will do it by it's self. It is normal for an oily mist to enter the breather but if the bike if past half way up the dip stick is hen you'll see an excess there.
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Old 10th November 2009
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What about oil coming out of the oil tank at the filler cap? Already lowered the oil level that had been overfilled at my 5000 mile service.
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Old 10th November 2009
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Poor piston ring to cylinder seal increases blowby which increases the amount of air/oil coing out of the head breather bolts. Also if the umbrella seals are getting bad they will allow more to escape.
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Old 10th November 2009
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I feel all better now

And so you should
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