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Old 03-27-2008, 02:49 AM
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SeattleMike SeattleMike is offline
Motorized Bicycle Senior Member
Join Date: Mar 2008
Location: Seattle, WA
Posts: 67
Default Exhaust leaking black oily gook

So I've been riding around my new creation for a couple days now (mountain bike w/ 80cc). I thought I tightened the exhaust plenty, and even locktited the nuts on, but burnt black oil is leaking out. I remember I had a 2stroke dirt bike years ago and the exhaust leaked the same way, but a bike mechanic said that it was supposed to do that. Is my 80cc supposed to drip gook out between the engine and the muffler? Or do I need to put on a better seal?

Also I smell like gasoline after every ride, but would rather not. Is this inevitable?

Last edited by SeattleMike; 03-27-2008 at 03:21 AM.
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