Question about kawasaki Ninja 250R Motorcycles

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Have a 2004 250 Ninja, have cleaned out the tank, cleaned the petcock, new plugs and even took the carbs off and made sure they were clean. Will only run on choke and wont rev up. take the choke off and it dies?? Any ideas?

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  • bobshot55 Jun 22, 2009

    Like I said, took the carbs off and took the jets out and made sure they were clean, then checked the floats and they were just fine, bike only has 4k on it.....was wondering if the carbs had a diaphram or pump, was running fine till 4 months later after sitting...Fuel runs great out of tank and when taking the screw out of the carbs fuel also runs good...Its almost like a accelerator pump is not working...

  • bobshot55 Jun 22, 2009

    Thats one thing I didnt do, only took off the bottom of the carbs, will check that out, thanks for the info......I thought something was wrong like that, I did pour gas in the one fuel line to the one carb and then it reved up. Will let you know.....again thanks

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Make sure that you take a peice of a wire wheel off and run it thrugh your jets if that dosent work im not sure if the needle valve has a diapham or not but if it does than u need to check them if none of that works than you need to look at your eletronics

Posted on Jun 22, 2009

  • thomas foster
    thomas foster Jun 22, 2009

    do the needle slide have diaphrams if so did you use carb cleaner in the carbs or starting fluid if so that stuff will strech the rubber and the diaphrams will not work properlythey work on vacuum the diaphrams are located on top of carbs when you pull the tops off they shoud be thight with only enough slack to move the slide up and down check for pin holes as well

  • thomas foster
    thomas foster Jun 25, 2009

    do you think you could give me a better rating since i tried to tell you the diagnoises to start with thank you if you need more help just let me know

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