Oil Leak Back of Crankcase - Page 2
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Thread: Oil Leak Back of Crankcase

  1. #11
    Senior Member doode's Avatar
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    Dude, you need to use your eyeballs and fingers and feel around for the leak.
    If you can't product good photos then not much we can do
    ancientdad likes this.

  2. #12
    Senior Member thats_incentive's Avatar
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    That's what I've been doing. The crank case is saturated with oil. I cannot clean it off, my fingers do not fit, my eyeballs cannot see past the frame which is capped over the area I believe the leak to be originating.

    I tried for the photos. I could achieve nothing worth posting, aside from the ones I did post in hopes you'd see something I don't.

    I do really appreciate the replies so far. I will keep investigating and hopefully in the mean time someone or myself will come up with something else to try.

    If it comes to pulling the engine...
    1971 CB350k3

  3. #13
    Senior Member thats_incentive's Avatar
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    I'll try drying things up real well and seeing if I can't get any warmer to the source. I'm not optimistic about this situation and really don't want to pay a shop as much as I paid for the bike to torque up a couple bolts I simply cannot reach.

    Grr. Thanks for the replies guys.
    1971 CB350k3

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  5. #14
    Sensei 66Sprint's Avatar
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    Spray it down with brakekleen.... Dust it with baby powder once it's dry....the oil leak will immediately darken the powder.....
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  6. #15
    Senior Member thats_incentive's Avatar
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    Quote Originally Posted by doode View Post
    If you can't product good photos then not much we can do

    Woah ok ouch I take offense to that. Those photos are gold.
    1971 CB350k3

  7. #16
    Senior Member thats_incentive's Avatar
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    There he is!

    I can't really get back there to clean, much less apply the powder or see it when it darkens.

    But I'll clean it up best I can tomorrow and go from there I guess.
    1971 CB350k3

  8. #17
    Sensei 66Sprint's Avatar
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    Aerosol spray will reach where you can't.......Throw a handful of powder at the area if necessary
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  9. #18
    Senior Member doode's Avatar
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    I guess we may as we'll discuss possible fixes for various scenarios
    I don't know where's much you can do if it's a leak between the case halves. I wouldn't suggest attacking the fasteners with a wrench.
    Same goes for the rt side crankcase cover. Replace the gasket if that's the source.
    You sure it's not a carb drain hose or your breather tube?

  10. #19
    Senior Member thats_incentive's Avatar
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    Now we're talking. Thanks guys keep you posted.

    Could be the breather tube. There's a bit of oil around the lip but I figured it came from it sitting flush against the soaked case .

    Left carb seems to be leaking from this one point on the carb body I'll post pics of that, but the wet stuff is def oil not gas.
    1971 CB350k3

  11. #20
    Senior Member thats_incentive's Avatar
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    What about the brake cleaner on the gasket material and other stuff isn't that bad news?
    1971 CB350k3

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