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Oil leak from exhaust port

This is a discussion on Oil leak from exhaust port within the CRF50 forums, part of the General Talk category; I put on a new(used) pipe a couple days ago and now I have oil leaking out of the exhaust port( I guess thats what ...

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  1. #1
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    Oil leak from exhaust port

    I put on a new(used) pipe a couple days ago and now I have oil leaking out of the exhaust port( I guess thats what u call it...where the header meets the engine). WHATS GOING ON? Aslo, the day after I put the pipe on my bike wouldn't start...turns out the plug has no fire, wtf?


  2. #2
    cyclerider57
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    Your pipe is cursed. HAHAHA



    Are you sure it is oil? There shouldn't be oil in your port. Did you replace the crush copper gasket when you put it on? Make sure your ground wire is bolted to the frame. Pull off your ignition cover and make sure the bolts are all tight.

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    Yes I'm sure its oil. Whats the crush copper gasket??

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    - Well , if you're sure it's coming from where the pipe bolts to the head , you've got big problems 8O . Time to replace the head or weld it up where it leaks from . But if it's coming from the head gasket , then you in luck .

    - The copper gasket cycle speaks of is the exhaust gasket . FYI - the OEM Honda gasket isn't made from copper
    Just say'n ....

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    I'm using the one that came on the pipe. Also, I have a K&N filter+the pipe so do I need to rejet?

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    Quote Originally Posted by JD50
    I have a K&N filter+the pipe so do I need to rejet?


    Usally no gasket come with pipes unless it was stuck to it and yes you'll need to rejet .
    Just say'n ....

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    Ite I took the pipe off the head to see where the leak is and when I put it back on theres an exhaust leak...52 main for the jetting?

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    So , do you still have the oil leak or is it an exhaust leak ?
    Just say'n ....

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    Still some oil leakin but I can hear exhaust comin directly from the head when I start it.

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    Did you remove the old gasket ? You may have 2 gaskets on there now ?
    Just say'n ....

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    I just thought of something...could me having it at an angle on the stand(front end lower than back) for 2 days have something to do with it?

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    Quote Originally Posted by JohnnyB
    Did you remove the old gasket ? You may have 2 gaskets on there now ?
    No it didn't come with a gasket. I was thinking of the metal thing that you bolt up to the head.

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    No . And if it did by any chance something is wrong with bike , broken mount or loose bolts .
    Just say'n ....

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    So the problem is probably that I need a new gasket?

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    For the exhaust leak , yes . But for the oil leak , that has yet to be solved ???
    Just say'n ....

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    Ite thanks. I guess I'll bring it to the ol machanic to get it checked out.

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    If you've got oil leaking out your exhaust, you are getting oil somehow in the combustion chamber. Is the bike blowing black exhaust?



    Two theories here.



    1. You are getting oil past the rings and should be blowing black smoke.

    2. You are getting oil past the exhaust valve guide, and should be blowing black smoke.



    If you aren't blowing black smoke, you don't have oil leaking out your exhaust, but rather have dirty water or condensation coming out of your exhaust leak.



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    It blew smoke right when I started it up tonight but after that it didnt and I am absolutly posotive that it's oil.

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    ok, heres my detective theory,

    ok the exaust leak was there, you set the bike for a couple days and all the oil drained to the head, leaked through the exaust valve seal, and dripped into the exaust port.

    ummmm...

    is that possible?
    yea i still ride

  20. #20
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    But the thing im confused about is I put the pipe on and couldnt really ride cus my wheels messed up so I just putted around. Then it sat for 2nights on the stand then I discovered the oil and all that jazz. How did I bust a gasket or seal or w.e if I wasnt even ridin hard

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