KMX 125 Running problem

[GeorgeB.]

Hi all,

Yesterday I did buy an off road KMX 125 to use as a donor for my road legal one - it came non running. Basically, the seller had been using it, put it in his shed for 4 weeks and when he started it (for selling) it would start but then die out after a few seconds. After a while he said it would start, but when he tried to rev it would just die.

Now, we got it to mine, and it started no problem, but it let us Rev. I took it up and down the street, but it died again, but this time wouldn't start at all.

it sort of felt like it was bogging down in 1st and then took off in second, if that helps.

Any suggestions? Gonna have a look at the carb this evening, but is there anything else I should check?
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Current: '99 Fazer 600 | '99 Range Rover P38 4.6 HSE
Previous: Keeway TX125 | CBF 125 | CB400SF Project Big One
CBT 04/12/12 | Theory 03/12/13 | MOD 1 06/01/14 | MOD 2 13/01/14

[1cyl]

Sounds like a partially blocked jet, whip it out and clean carb, fresh fuel. Job should be a goodun
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Chase my Witch up, Catch my Snitch up.
The SMC | The Pit | Stable

[bikenut]

tank etc........fuel cap vent......crap in carb ( from tank ) .........etc etc etc
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nuts about bikes

[bladerunner]

Fit a new plug first then look at fuelling
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's