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Thread: Oil Leak: Anyone know where it's coming from?

  1. #16
    Join Date
    19th July 2005 - 20:17
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    95' CBR900
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    The hose line with the leaks is part of the 2 stroke oil injection system. A pump in the engine case forces the oil along that hose.
    From your pictures there doesn't appear to be any clamps holding that hose on.
    Try pulling the hose off the fittings at each end and seeing how freely it comes off. As the line is under pressure, it may just be a tired rubber hose letting oil seep out.
    You could try some small hose clamps on it, or else twisting some lockwire round it with pliers. Don't go nuts getting it tight or it will cut the hose.
    While you have the hose off, have a look for cracks in the fittings as well.
    vagrant

  2. #17
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    19th July 2005 - 20:17
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    Just been downloading and perusing the manual. In the engine section on page 3-7 it has a picture pointing to the oil lines, and on 3-8 it shows the oil pump.
    In your picture, leak 1 is at the outlet from the oil pump.
    And on page 3-32 the bottom picture shows the fitting for your leak 2. It is just to the right of the figure 8. This is the oil feed to your crank bearing.
    Another possiblilty occured to me, and this is is slim chance. If the fittings are not cracked and the hose is pretty tight on the fittings, then you may have a partial or full blockage in the port leading to the crank bearing. The pump is still pumping oil down the line, it just can't get out the other end. That would be a slim possibilty, but something to get checked if the leak doesn't stop.
    Hope that helps some.
    vagrant

  3. #18
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    31st July 2006 - 16:40
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    K7 SV650
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    Quote Originally Posted by breakaway View Post
    I've got the manual, and have been trying to figure out what that hose is for about 15 minutes now, nothing conclusive.

    So how difficult will fixing this be?

    More importantly can I do it myself and save some $$$$?
    Well theres three in total .
    1. hose coming from the oil tank to the oil pump (the feed)
    2. one hose coming off the oil pump and too the cyl head
    3. one hose coming off the oil pump and to the crankcase
    {pic 3 shows #2 & 3 well)

    First you need to find out which of the hose's is leaking (could be more than one) , then whats causing the leak/s - hole , loose , perished etc.

    you may have to clean it all up again , give it some rev's whist on its stand and see if you can spot which hose it is (if its leaking fast enough) . otherwise get ye hands dirty and physically inspect each hose with the eyecromiter .
    There he goes. One of God's own prototypes. Some kind of high powered mutant never even considered for mass production. Too weird to live, and too rare to die.

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    all's fair in love, war and tax avoidance.

  4. #19
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    21st June 2005 - 20:11
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    My bike leaks a bit of oil, CBF fixing it really.

  5. #20
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    5th March 2007 - 18:08
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    Quote Originally Posted by MrPeanut View Post
    My bike leaks a bit of oil, CBF fixing it really.
    Same here, but it poses a safety issue. So it really is in my best interest to get it sorted. And it seems that it won't be too hard to do so.

  6. #21
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    5th March 2007 - 18:08
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    Fixed: I had R6_kid come down, and he took off the read seat and fairings etc, and found that the hose in question had a huge crack in it, almost fully split. For the moment, it's been patched up with cellotape, I just took it for a quick blat and parked it, and there doesn't appear to be any oil drops on the ground under it.

    I need to get that hose (And the one next to it) replaced at my earliest convenience.

  7. #22
    Join Date
    13th September 2005 - 18:20
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    I presume you mean the hose from the 2-stroke oil reservoir?

    Make sure you use hose of a material that is oil resistant and not easily kinked.
    If it wasn't for a concise set of rules, we might have to resort to common sense!

  8. #23
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    24th September 2006 - 02:00
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    Quote Originally Posted by breakaway View Post
    Fixed: I had R6_kid come down, and he took off the read seat and fairings etc, and found that the hose in question had a huge crack in it, almost fully split. For the moment, it's been patched up with cellotape, I just took it for a quick blat and parked it, and there doesn't appear to be any oil drops on the ground under it.

    I need to get that hose (And the one next to it) replaced at my earliest convenience.
    Awesome! Now, you know why you need to get a naked for your next bike

    If you can't find a hose as soon as possible, or while you're waiting for some to ship, and the sellotape just isn't cutting the mustard, try some Nitto tape. It's electrical tape, but it is remarkably oil resistant and remains sticky even when it gets damp. Marvellous stuff.

  9. #24
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    5th March 2007 - 18:08
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    Thanks for the help guys. It's been 2 days, and I've been riding it heaps each day, and no puddles are forming like they used to.

  10. #25
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    24th September 2006 - 02:00
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    I'd still replace the tube, though. I know from personal experience how temporary bodge-up fixes are highly likely to just be left until they inevitably fall apart, lol! Where can you get tubing like that, anyway? Not only for breakaway's benefit but I want to replace the breather tube on my crankcase and don't know where to buy that stuff.

  11. #26
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    Quote Originally Posted by xerxesdaphat View Post
    I'd still replace the tube, though. I know from personal experience how temporary bodge-up fixes are highly likely to just be left until they inevitably fall apart, lol! Where can you get tubing like that, anyway? Not only for breakaway's benefit but I want to replace the breather tube on my crankcase and don't know where to buy that stuff.
    Yeah, I'll get around to replacing it, eventually.

    And you could probably buy tubing like that from a motorcycle shop. When R6_Kid was over, I asked him about changing the hose myself, and he reckons it could be a problem if the hose is tapped into wherever it goes.

    I guess I'll have to get a motorcycle shop to change the hose, given my lack of knowledge.

  12. #27
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    13th April 2005 - 12:00
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    How we find leaks is by using Baby powder ,,, just work up from the puddle puff the stuff everywhere ,,,a leak /split hose will sow up real quick ..just remember water/oil never falls up ..always down

    Stephen
    "Look, Madame, where we live, look how we live ... look at the life we have...The Republic has forgotten us."

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