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Discussion Starter #1
I have a 2001 honda xr100r and i noticed my bike was smoking really bad and i saw a small hole in the muffler pipe and black oily liquid was leaking out and i dont know how to fix it
 

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Motorbike Macgyver
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The black oily liquid leaking out is unburnt fuel, its normal especially if it's a two stroke. Best way to fix it is to take it to a muffler shop and have them weld the hole shut, shouldn't cost much.
 

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I would guess rings are worn or the bike is running rich and the soot mixed with unburned fuel looks oily. My first check would be a compression check. If compression is good it is time to start checking for the proper air/fuel ratio.
 
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