Question about 2001 Yamaha YZ 426 F

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Okay I let my 426 sit for a while I bought a rebuild kit for the carb and seemed to have fixed the problem (running too lean). I fell in a big puddle of water and it started running the same way again so I cleaned the carb and I think I made it wourse Its running way too lean but seems to run half way ok when I leave the choke on. (High idle though) I just want to go ridding and not worry if Ill make it or not.P.S I have had the 01 426 since 00 and I have the same jets in it since it was new. I have rebuild top and bottom end twice since 2000

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  • maribelhammo Sep 08, 2010

    that seems a little coincedentale ( SEAFOAM ) is that supose to be funny?

  • maribelhammo Sep 08, 2010

    I think the advice I recieved was unprofessional I could use some real help

  • maribelhammo Sep 08, 2010

    was that supose to be funny?



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Hi! Few things to look at. Fuel filter may be clogged with dirt causing poor fuel supply to the carb, you will need to replace it. Electric current may be weak so I strongly suggest that you replace the plug wires to give better current to the plugs. If the plugs are worn I suggest that you replace it for better fuel burning. HOpe this helps and thank you for using FixYa!

Posted on Sep 08, 2010

  • dj_relly999
    dj_relly999 Sep 08, 2010

    Hi! You may want to try my suggestion. This can help. Have a nice day!


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OK do this. go to any auto parts store and get a bottle of a fuel tank additive called seafoam. follow the directions on the bottle regarding how much to add. After you add this and drive 5 miles your problem should be solved. Joe

Posted on Sep 08, 2010


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