Oil leaking out of hole on right side of cylinder?

3 replies to this topic
  • centralmax

Posted July 18, 2009 - 07:22 PM


What is the hole on the right side of the cylinder and why is there oil leaking out of it?

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  • 426 NOOB

Posted July 18, 2009 - 07:45 PM


That hole is a drain for the spark plug area. When you get water in there it allows it to drain rather than build up. I doubt its oil, but more likely dirty water coming out and if it is oil, tighten up your spark plug.

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  • papxj

Posted July 18, 2009 - 08:22 PM


Did you wash your dirty bike and spray dirty water up there? It's probably water. Taste it to be sure...

  • grayracer513

Posted July 18, 2009 - 10:05 PM


If you have oil coming from there, there are two possible causes

  • The spark plug could be loose enough to leak combustion "goo" around it's base (not likely, unless you're burning a lot of oil)
  • The cam cover gasket is leaking into the plug well

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