2006 KTM 250SXF wont run

xxxchin
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xxxchin
hey all I'm new to this VITAL MX n this problem is driving me mad please help
I have a 2006 ktm 250sxf motor in a go kart it was running perfect up until last drive when high rev range it was breaking up (missing) so I packed up n came home now when trying to start it it will start after bout 2 or 3 kicks n a few pumps on the throttle it runs 4 bout 10 sec then stalls n wont start  iv changed fuel checked valve clearances cleaned carby changed plug checked timing it has spark but not a bright blue spark n when checking spark it seems to be not sparking every kck I'm thinking of replacing the coil n cdi but its an expensive guess any idea anyone please help
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gsxr6
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gsxr6 10/14/2016 10:32pm
10/14/2016 10:32pm
Hold the spark plug and ground yourself with other hand on the engine and have a buddy kick it over real fast. U will know right away if the spark is weak or strong.
gsxr6
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gsxr6 10/14/2016 10:33pm
10/14/2016 10:33pm
I'm not joking btw
malachi177
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malachi177 10/14/2016 10:41pm
10/14/2016 10:41pm
gsxr6 wrote:
Hold the spark plug and ground yourself with other hand on the engine and have a buddy kick it over real fast. U will know right...
Hold the spark plug and ground yourself with other hand on the engine and have a buddy kick it over real fast. U will know right away if the spark is weak or strong.
Laughing

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Katoomey
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Katoomey 10/14/2016 10:49pm
10/14/2016 10:49pm Edited Date/Time 10/14/2016 10:50pm
your in the wrong sub-forum....

you might get more help if you post in the race shop sub forum.
endurox
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endurox 10/14/2016 11:09pm
10/14/2016 11:09pm
Sounds like the stator went tits up.
PTshox
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PTshox 10/15/2016 1:18am
10/15/2016 1:18am
That bike is doing you a favor by not running. It is one eval handling machine.....
scottydogmx 10/15/2016 3:29am
10/15/2016 3:29am
Check the timing, I had an 07 450 and spent loads of time and money changing the Box of tricks and other electrical stuff until we found a nut deep in side that was attached to the crank had came loose and was throwing the timing out just enough to fire but not run
catatonic
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catatonic 10/15/2016 4:49am
10/15/2016 4:49am
My bet is the cdi is junk......my '07 almost killed me when the cdi puked.
Early models had an issue with the plug cap cracking and arcing also.
Start it in the dark.....if that's the issue you'll see it.
ATKpilot99
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ATKpilot99 10/15/2016 5:57am
10/15/2016 5:57am
PTshox wrote:
That bike is doing you a favor by not running. It is one eval handling machine.....
The engine is mounted to a go kart.
gsxr6
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gsxr6 10/15/2016 8:59am
10/15/2016 8:59am
I'm not joking when I say hold on to it and kick it over. That's how I check them. If it doesn't even make u jump then u are on the right track. If it hurts a lil then the spark is strong enough. Now whether or not it's on time another question.
xxxchin
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xxxchin 10/15/2016 1:39pm
10/15/2016 1:39pm
Thanks everyone 4 ur help ill go n double check everything again n let use no how I go

GSXR6 I got no buddys to help me so I held the spark with my teeth n kicked it over kind of like putting ur toung on a 9v battery
gsxr6
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gsxr6 10/15/2016 3:17pm
10/15/2016 3:17pm
Yep that's weak spark. It should make u jump. Ever been shocked by a spark wire on a car? It should be 15000 volts buddy. In ur mouth would've been a real negative surprise if the spark was strong
r.sal923
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r.sal923 10/15/2016 4:52pm
10/15/2016 4:52pm
gsxr6 wrote:
Hold the spark plug and ground yourself with other hand on the engine and have a buddy kick it over real fast. U will know right...
Hold the spark plug and ground yourself with other hand on the engine and have a buddy kick it over real fast. U will know right away if the spark is weak or strong.
malachi177 wrote:
Laughing
No joke. That is what I do

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