The bike starts first kick every time with no choke compression is great but it sputters in high RPMs as if there was a rev limiter I was told it was the Jets because it does have full pro circuit exhaust but I was also told its the spark plug cap because with my YZ 125 when I put the cap on spark plug it clicked in and I could hear the click, with this bike when I plug it in there is no click at all please send advice or tips...I'm pulling my hair out here, people
SOURCE: wont start by kick start but will by pull start
it could be the gaskets around your carb are bad and leaking air if so its thinning your gas fumes with more air then what is needed inside your combustion chamber witch is causing your engine to stop running like that. best of luck
SOURCE: 1999 KX 125 The bike has
Check your fuel filter, sounds like it maybe clogged or needs replaced, can use a generic gas filter to fix or troubleshoot your problem. Rick
SOURCE: kx 125 problems
it runs but sputters.
that can be 2 things.
First idd your sparkplug cap has had it (get a new 1 from the parts store)
2nd it could be that your getting to much fuel in top end of your revband.
easy to check just run your bike a few min with a new sparkplug and look at the color.
Wite is not enough fuel.
Brown is perfect mix.
black is to much oil and if black and wet its to much fuel.
try this test and maybe you'll find it
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