Maintenance & Technical > KX250 / KX125

Spark Plug gap/type

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air:
When I bought my bike I asked them what plug I should run and gap they told me br8es and they come "pregapped to the right size" I have been reading arround alot on this site and people seem to be running different plugs then the br8es and running different gaps. My question is what plug and gap should I run and If my bike is running fine now with a br8es not gapped would it run better with the right plug and right gap? Thanks

hughes:
I would stick with factory plug and heat range. The air gap is important. The air gap will relate to a pre-set time that it takes for voltage to produce spark across the ground strap and the electrode. Heat range is very important. To cold and plug will be prone to fouling. To hot could even overheat the plug and cause pre-ignition. Just my 2 cents :-D

air:
Btw its a 99 kx250 do you know what plug and gap I should run I dont have a manual stupid me, Its on my list of things to buy.

air:
And yes my plug fouled last night in one of the worst spots possible is why im questioning the dealership

r1ray:
Sounds like you need to work on your jetting and not spark plugs.

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