Excess fluid in crankcase breather?

Discussion in 'Motorbike Technical Discussion' started by luke, Nov 11, 2004.

  1. luke

    luke Guest

    Hey all. My little nighthawk 750 (a 92) has been accumulating fluid
    in her crankcase breather tube much more quickly than she used to.
    For those unfamiliar, it's one of the breathers with a little plug
    that you undo to periodically drain out the crap. The tube is clear,
    so I've always just emptied it when it had a noticeable amount of
    crap, or when I thought of it, or whenever.

    The last month or so, though, that tube's been getting mostly full of
    fluid every few weeks, it seems (maybe 5-600 miles?). Fluid appears
    the same as it always has--sort of a dirty grey stuff, doesn't smell
    siginificantly of oil or gasoline, really thin, almost like water.

    My thoughts are maybe that since it's gotten colder (it's in the 30s
    and 40s here in NYC now) maybe the difference between running temps
    and sitting temps is causing more condensation to occur inside (as the
    engine cools when turned off) therefore more fluid? Is this
    ridiculous? I don't remember this last fall. I'm on the ball with my
    maintenance; the bike has 45k on it but doesn't burn any oil to speak
    of. So far as I know floats and petcock are sealign nicely, oil level
    isn't going up or down unusually.

    I'm not worried about it, but I'm curious. Any wisdom?


    luke, Nov 11, 2004
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  2. luke

    The Family Guest

    Maybe, you should try a gas station change.

    The Family, Nov 11, 2004
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