Question about 2007 HM CRE F490X I

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My F490XI model when i start it the bike splutters then dies it has a bad noise from the right side of the topend iam putting in a new cam chain did the valves that did not get rid of the noise also putting in new cam shaft bearings as they are loose can anyone give me am idea of what the problem is the carb seems fine all the tubes dont leak ive put a new spark plug in to

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First what kind of noise. Plus did you replace the cam chain tenisor when you replaced the chain. That will make a noise in the top end. Other than that piston slap will cause some noise but you will hear it more at higher rps most of the time. I have seen a lot of problems latly where the tank does not breathe properly so it will start spudder then die a few times. Usually it is the gas cap.,

Posted on Nov 10, 2008

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Posted on Jan 02, 2017

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Splutters only at junctions plugs are ok

If your plugs are light brown then your fuel mixture is perfect.

But you may have clogged idle jets due to having the bike sitting for a long time without STABIL in the gasoline, may also be clogged fuel screens or filter.

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I have a fresh motor, new topend, starter gear?

Check the plug. I have had a very similar problem just recentley yesterday infact. It could be that you are running the oil mixture too rich as well...Good luck

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