please read this about oil leak

6 replies to this topic
  • Goaleman27

Posted October 29, 2013 - 03:39 PM


before everyone gets their panties in a bunch about this post from what i have SEARCHED on here i have not found a definate solution. i just puchased bike a week ago. 06 YZ450F with about 60hrs My breather tube from head is leaking ALOT of oil... so much so it gets on the chain and swingarm and tire. i also drive on the street as well because its street legal. I noticed after i stopped for gas and my back tire looked like it had about a gallon of tire shine on it. i know some coming out of there is normal but this is alot. i made a little catch can on it today and drove around the block maybe 2 miles and when i came back to check it out there was about 1oz. maybe more in the container. i find that to be alot. now i know some people say overfilling oil can cause it to leak but impretty sure thats not the case.

someone please help me out and give me some direction. thinking i have to do top end but just want some opinions plwase and about how much to do top end about.

Edited by Goaleman27, October 29, 2013 - 03:52 PM.

  • etuke

Posted October 29, 2013 - 03:48 PM


worn compression rings causing a lot of blow by.What year /make of bike and about how many hours?

  • Goaleman27

Posted October 29, 2013 - 03:51 PM


sorry forget that little bit of info.... its an 06 yz450f and i was told about 60hrs

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  • grayracer513

Posted October 29, 2013 - 04:26 PM


If you ask me, I think you may have misdiagnosed the source of the leak.  I could, of course, be wrong about that, having not seen it, but it sounds a lot more like a output shaft seal leaking.  Check again.

  • Goaleman27

Posted October 29, 2013 - 04:34 PM


I had a catch can on the end of breather and it wa leaking into there.... Nothing else was wet since I coverd that up...

  • grayracer513

Posted October 29, 2013 - 10:19 PM


What are the chances that the engine is overfilled?

  • Goaleman27

Posted October 30, 2013 - 12:08 PM


i checked the oil and was fine since the. i checcked again after i saw what was going on and the level is dropping

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