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Honda MX & Off-Road Dirt Bikes
`03 Honda CR250R Strange "knocking" sound!
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[QUOTE="dubious, post: 848414, member: 57114"] It could be a bad rod bearing, loose piston(too much clearance). A friend of mine has a03'cr 250 with the rc valve and when he did his top end he over tightened the cables , and broke the rocker plate which the cables attach to on the power valve. The exhaust valve would not open and needless to say it had no top end power. Check your exhaust valve linkage. Often the exhaust valves are over looked when a top end is done, when in fact some parts are worn out! [/QUOTE]
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Honda MX & Off-Road Dirt Bikes
`03 Honda CR250R Strange "knocking" sound!
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