Question about 2004 Yamaha YZ 450 F
If it has allot of use & hours on the motor - then its typical.. The piston & rings ware out on 2 stroke engines.. They need to be replaced after so long.. It common..
Or maybe a little to much iol in the gas mixture..
Hope this helps !!
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Posted on Jul 13, 2009
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Posted on Jan 02, 2017
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