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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
positioning of spark plug nose.
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[QUOTE="Jaybird, post: 1080985, member: 22283"] I noticed on my ktm125 that when I got very close to optimum on the main jet, the plug would also show the same sort of color pattern as you are describing. I found that it wasn't a matter of how the strap was positioned in the jug, but rather just how the turbulance during combustion did things. I marked different plugs and found that it was not in relationshop to the strap position. I'm certain it is simply the charectoristics of the particular combustion chamber. My yz125 does not show this when the main is close to optimum. I think your main concern should be on keeping a 1-2mm carbon ring at the base of the insulator and let the tip do what it does. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
positioning of spark plug nose.
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