Question about 2005 Honda CRF 450 R

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My CRF450 Honda is leaking engine oil trough the carburetor, and trough a little hole on the right side of the cylinder.

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  • Anonymous Mar 14, 2014

    Keeps cutting out

  • Anonymous Mar 26, 2014

    there is a hole on the side of the cylinder head on a 04 crf 450, mine is always pushing out oil, is this due to a bad head cover spark plug hole seal?


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Hi there

You should not have oil leaking from the carby. If you have over filled it with oil, then it may be coming from the crankcase breather and then into the airbox, and appearing to come from the carby. If you have not over filled it, then the bike may have blowby problems with compression gasses passing the rings, and in a similar manner forcing oil out the crankcase breather. Not sure about the hole in the side of the cylinder... do you have a picture? Unless its pouring out, or gets worse, I would not be too worried. If you have over filled the oil, maybe time for an oil change to get the level right.


Posted on Dec 06, 2008

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