Question about Yamaha XS 650 C Motorcycles

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Runs great for a while then all of a sudden while running it will stop suddenly..when I go to restart it -it turns over and all of the electrical works but it won't start-it is like it is out of gas. then I will let it sit for a couple of days then it starts up and runs great for a while---it has stopped on me 3 times this summer

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Check the spark plugs and injectors/cylinders.When the engine gets warmed up,after that any of the cylinder stops firing and slowly --- slowly all cylinders stops firing and this causes the engine to stop.But after few minutes the electrical components will work but the bike will not start running because the injector cylinders not firing up.But after the engine cools down completely the bike again starts as normal,but the same cycle repeats as the engine gets warmer.Get the fuel,oil and gas checked.If all checked ok then check the fuel pressure,if its low then get the fuel pressure corrected,in some cases faulty fuel pump and clogged fuel filter causes low fuel pressure.If fuel pressure checked ok then get the carb cleaned and check out all the electrical connections connected to battery.As any electrical short in the connections can cause the engine to get warmed up and this causing the cylinders to stop firing.

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Posted on Sep 16, 2010

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