[Kfx700 running like crap] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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Kfx700 running like crap
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Posted by: esquared

I have had this since october of last year and recently the power on top end is not there and it sputters at full throttle . I run VP 101 in it and until recently it ran fine . At slower speeds it is smooth running until I get on it . The problem started when it got over 100 degrees here in Phoenix . I ride it about twice a week for a half hour or so on the street and I am wondering if it could be the fuel going bad . Any opinions ?

The quad has a pro circuit exhaust and has been rejetted .

Posted by: frotrk

check that both chokes are fully open
Clark

Posted by: esquared

Well clark you are right . I opened the airbox this morning afterr a full power run at 70 degrees and it was worse than when I ran it at 100 degrees last week . Started to tear into it to rejet and this is what I found when the filter came off . I am thinking what a idiot I left the choke closed then when I looked at the choke lever it was open but the chokes were closed . Looks like a run to the dealer in the morning .

Posted by: frotrk

just looked at your pict. those are the carb slides, the choke butterflies are under them.
Clark

Posted by: FST715

Running too rich?

Posted by: esquared

I believe loose battery cables were the cause . I found them last week when it would not start and once tightened the problem is gone . Back to full power .