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Thread: oil leak at exhaust pipe

  1. #31
    Senior Member suzukijo's Avatar
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    this is a longshot, and should be done as a last resort. there could be a porosity in the casting.
    what needs to be done, is to have the area cleaned thoroughly, and after that is done, as suggested a long ride to generate the leak.
    use some spray white powder, as often is used with dye penetrant, to coat the area, and see EXACTLY where the leak is coming fom.
    you can use the spray foot powder, or baby powder, but one needs to have a clean engine to start with, (lots of elbow grease, half a case or more of carb cleaner/good selection of brushes, pressure washer -bring lots of coins- ) ad a keen eye and an open mind to find the origin of the leak.

    once you find the leak, if it is a porous casting, some epoxy and black paint will fix it up.

    happy hunting.

  2. #32
    Senior Member panagiotis's Avatar
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    bike at 24,000 miles. couldnt see a leak... will check a few more times

    Whiteout (my bike)

    PS125, CBF600, Hornet 600, CB1000R
    "its like a hornet on 'roids!"

  3. #33
    Junior Member Jetro's Avatar
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    Hey guys, taking this post back. Im having a cb1000r 2012 for about a year now, 9500km on it. I have the same leak on the right cylinder. the bike is still on warranty up to end of july. It is a small leak, i had the smell of hot oil burned sometime.. i didnt knew where it came from. From now, my question is: Should i get this to the dealer and take a look at it while it is on the warranty, or i should live with it and keep the engine as is. I dont like people working on my things.. it's never done correctly. So is it worst to leave it that way or i should make a move and ask for a repair.

    Thanks a lot!
    Jeremy
    Montreal, Quebec Canada.

  4. #34
    Super Moderator jon.f's Avatar
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    My bike is a 2009 and had a slight weep from the very same place. This was very slight for a couple of years and then slowly got worse until suddenly it was that bad it just had to be sorted. I would advise you get it done under warranty then if it returns you have the guarantee and right to return if it returns. I had mine done by a good friend who is a very qualified and capable mechanic who also works on race bikes. 75.00 Bargain.
    One Life. Live it to its full. Black ones are the fast ones

    R I P Simoncelli

  5. #35
    hlu
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    Junior Member hlu's Avatar
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    Yes, 75 is a bargain - I paid 500 (including a 24.000 km service).

  6. #36
    Junior Member B.Sikora's Avatar
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    Hi, anybody know what to do with this leak? i have this same problem.

  7. #37
    Senior Member DELuth's Avatar
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    Read posts 27, 28, 29, and 30 in this thread.

    Welcome to the site, btw.
    "I don't know how to put this, but I'm kind of a big deal. People know me. I'm very important. I have many leather-bound books and my apartment smells of rich mahogany."

    My Bike

  8. #38
    Super Moderator jon.f's Avatar
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    This is where to look.

    Quote Originally Posted by DELuth View Post
    Are you thinking the job was not done right? If it was resealed properly by a pro as you say and you still have a leak, it isn't going to be the valve cover gasket/seals. Your last post says it has been repaired twice and you are planning a third time. It sounds like you are pissing in the wind. The orings I am talking about cannot be changed by just removing the valve cover. They are deeper in the head and LEAK INTO THE PLUG HOLES. Hold on, a picture is worth a thousand words....
    Quote Originally Posted by DELuth View Post
    If the valve cover has been resealed and you are sure it isn't that, then the cam holder o-rings are leaking. See it all the time on older Honda cars. There are o-rings between the cam holders and the head. If they leak, oil ends up in the plug holes. Our CBs have the same design. If the leak isn't bad, live with it. It won't be cheap to fix unless you can do it yourself.
    Quote Originally Posted by DELuth View Post
    Ok, here is a pic of what I mean. Look at number 4. There is one aroung each plug hole and they leak into the plug hole and out the weep(drain) hole.

    Attachment 18497
    B.Sikora likes this.
    One Life. Live it to its full. Black ones are the fast ones

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  9. #39
    Senior Member Bogbrush's Avatar
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    Removing the cam cover and replacing the O rings on the spark plug tubes isn't beyond anyone who is confident with a spanner,most bikes are the same as this be it Honda Yamaha and some cars even as DELuth pointed out,not over tightening things on this job would be the only thing,so get a decent torque wrench that goes down low enough
    Dave H and B.Sikora like this.

  10. #40
    Senior Member E200's Avatar
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    Quote Originally Posted by Bogbrush View Post
    Removing the cam cover and replacing the O rings on the spark plug tubes isn't beyond anyone who is confident with a spanner,most bikes are the same as this be it Honda Yamaha and some cars even as DELuth pointed out,not over tightening things on this job would be the only thing,so get a decent torque wrench that goes down low enough
    Well if you have the talent and necessary skills to do these jobs yourself then you can save yourself a lot of cash in the process
    Bogbrush and B.Sikora like this.

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