|
So aparently I spoke too soon. Was riding today when all of a sudden the bike just stopped while I was idling at a light. Motor wouldn't budge. Fearing I dropped a valve I pushed it back and tore it apart. What I found was that an intake valve guide had broken apart at the bottom and fell into the cylinder. Thankfully the walls look fine, just the piston top and head have a nice little dimple which should be fixable. I'll inspect the rod, pin, etc later to make sure the sudden stop didn't crack anything. The valve itself looks ok... won't know for sure till I take them out. I've never had a valve guide catastophically fail like that before. Good news is motor is ok... bad news is I'm not sure what caused the failure. If it was exhaust I'd say excessive heat, but it's the intake side.
|