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Author Topic: klx250 running like crap  (Read 8785 times)

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Offline Kane Mcguire

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klx250 running like crap
« on: May 06, 2018, 10:40:08 pm »
Klx was running great but only lasted one lap in practise before starting to misfire above 3/4 throttle. I do remember it was getting harder to start when hot. It doesn't want to even start now and the spark looks and sounds weak. Everything has been checked(carb, cam, tappets, plug) and nothing has moved so I now suspect ignition. Does anyone know the specs to test cdi, stator, coil, pickup etc?? Or where I could send it all?? Thanks
« Last Edit: May 06, 2018, 10:43:06 pm by Kane Mcguire »
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Offline Bumper

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Re: klx250 running like crap
« Reply #1 on: May 07, 2018, 07:36:18 am »
Mine did the same thing at one stage , plug looked very rich ,ended up being a  coil ,hard to start and flat up top , replaced the coil and good as new ,thanks bumper
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Offline Curtis

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Re: klx250 running like crap
« Reply #2 on: May 07, 2018, 09:46:22 am »
Iv got a original factory manual if you want any specs, or I can sell to you?
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Offline Kane Mcguire

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Re: klx250 running like crap
« Reply #3 on: May 07, 2018, 10:37:25 am »
Bumper your a legend! Yep my plug is rich as also. I'll test/replace coil first.
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Offline Kane Mcguire

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Re: klx250 running like crap
« Reply #4 on: May 07, 2018, 10:42:16 am »
Curtis I have a manual but its missing pages. I can not find any ignition specs online. Could I have coil, stator, cdi etc readings? I'm now in a big panic cause the QLD evo titles are on in 3 wks.
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Offline OverTheHill

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Re: klx250 running like crap
« Reply #5 on: May 07, 2018, 11:08:34 am »
Might be talkin outa turn sorry, but tend to think if it's sparking--if you can see spark, with a cdi system then it'll go!!. Not knowing these motors except i did have one at work about 40 years ago with a buggered cam--inlet lobe nearly gone, man was it gutless. BUT--i'm wondering it it's stuffed the key on the flywheel seeing i dare say the spark is triggered by a strip on the outside of the flywheel--in which case it would spark but somewhere other than near tdc. Was only a thought [like stirring things up lol but sometimes i find the answer].
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Offline Kane Mcguire

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Re: klx250 running like crap
« Reply #6 on: May 07, 2018, 11:35:05 am »
Nice ill check that.
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Offline cloggy

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Re: klx250 running like crap
« Reply #7 on: May 24, 2018, 09:51:26 am »
check the carb stub. mine cracked
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Offline Curtis

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Re: klx250 running like crap
« Reply #8 on: May 25, 2018, 09:35:43 am »
Quote from: Kane Mcguire on May 07, 2018, 10:42:16 am
Curtis I have a manual but its missing pages. I can not find any ignition specs online. Could I have coil, stator, cdi etc readings? I'm now in a big panic cause the QLD evo titles are on in 3 wks.
sorry just saw this...pm me your number and I can send you pics of the pages in the book.
also I put a new carb on mine and it was sooooo much better!
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Offline Kane Mcguire

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Re: klx250 running like crap
« Reply #9 on: May 27, 2018, 11:26:35 pm »
pm sent Curtis thanks
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