2010 valve lock issue

3 replies to this topic
  • wrxmxer

Posted May 25, 2014 - 07:48 AM


How does this happen?? Bike was running fine then it just stalled out and lost compression when trying to restart. ImageUploadedByThumper Talk1401032910.391432.jpg

  • luckyguy19

Posted May 25, 2014 - 08:32 AM


This exact thing happened to my exhaust valves.  Seems like the hard coating wears off and the valve just starts to break down.  I replaced both exhaust valves and have had no problems since.  My valve dropped enough to hit the piston.  I had to replace the crank about 5 hrs after replacing the valves. 

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  • wrxmxer

Posted May 25, 2014 - 08:53 AM


Ya this is exhaust also. I'll keep the crank in mind. I'm in the process of taking the head off now and will see what I see I guess.

  • wrxmxer

Posted May 25, 2014 - 07:06 PM


Well, I got lucky! No damage other than the lock coming out. There doesn't seem to be anything wrong with the valve or the locks but I'm going to replace them anyway.

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Edited by wrxmxer, May 25, 2014 - 07:06 PM.

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