99 yz 400 disappearing oil.

3 replies to this topic
  • kx4life13

Posted August 03, 2014 - 11:36 AM


Somewhere my bike is losing oil but i don't know where it doesn't just leak on the ground but it also doesn't burn anyone know where the bike would be losing about a quart of oil every time I take it out that has no signs of oil loss except just checking the oil

  • grayracer513

Posted August 04, 2014 - 06:16 AM


Are you checking the oil within two minutes of running the engine?

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  • kx4life13

Posted August 04, 2014 - 02:47 PM


Yes and no. Either way it's empty or at the fill line

  • grayracer513

Posted August 04, 2014 - 03:01 PM


The YZF is a dry sump engine.  If you don't check fairly shortly after shutting off, oil will run back down out of the frame tank and back into the engine, making it read low. 


But, if it doesn't leak and it doesn't burn oil, then someone is stealing it. 

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