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CBR600F4 possible fuel problem
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CBR600F4 possible fuel problem - August 9, 2010, 12:38 PM

So I was sitting at a stop light and went into first bike start bogging down on acceleration and then cut out. Bike wouldn't start bake up after that so I waited until the next day started for 3 sec then cut off that's with the choak at full. Im thinking a gas problem cleaning the Carbs today, if this doesn't do the trick any suggestions, Fuel pump is good tested, also gonna clear the lines see if there's any bad gas build up. Battery is fully charged and new, replaced spark plugs seated good, Like I said after this if it doesn't do the trick im gonna need some help. Thanks everyone. 99 CBR 600 F4.


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August 9, 2010, 12:45 PM

sounds like carb service is needed....


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August 9, 2010, 01:09 PM

Take the tank off and drain the carbs and catch the fuel in a container. You are looking for water and it will be obvious if it's in the fuel. If the bike was running okay and then all of a sudden you have a failure it's highly unlikely that your carbs gummed up and the fuel filter shouldn't have allowed any trash into the carbs but water can easily make it's way into the carbs. You can also hook up a fuel bottle to the carb fuel feed line with the tank off and gravity feed the fuel into the carbs to rule out fuel delivery issues.
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August 9, 2010, 04:13 PM

Okay so we ripped everything apart today cleaned every last part new jets and serviced the jets, flushed the gas tank and checked the fuel pump. Started right up then started running poor and cut off when I went to give it gas. Thought it might not be getting fuel but thats not the problem and checked all the connections. Could it be the battery? not giving the right spark....we checked the spark on each coil and plug and it read fine so im out of idea. The low down starts for a few sec give it gas shuts off.


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