2 Stroke Spark Plug Read Please

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12/2/2017 12:15 PM

Cant get any closer pic sorry, i didnt do a plug chop just direct of a fast track. Bike is running very crisp.ThanksPhoto

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12/2/2017 7:49 PM

I'm no expert but the jetting is definitely off if the inside piece is white. Supposed to be a light brown/mocha. What's the bike?

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12/3/2017 6:27 AM

Rohr144 wrote:

I'm no expert but the jetting is definitely off if the inside piece is white. Supposed to be a light brown/mocha. What's the bike?

This. Running a tad lean.

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2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

12/4/2017 10:07 AM

Looks like a ktm with the rubber piece?? I would also say lean, u want a brown color, not black and not white

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12/4/2017 10:34 AM

I agree that you are too lean. Go one step richer on your main. You may be perfect after that but if it is a hair too rich leave the richer main and lean out the needle one clip.
It looks like your pilot circuit is running a tad rich, actually. You could probably open up the air screw or go leaner on the pilot jet.

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Braaapin' aint easy.

12/4/2017 12:40 PM

Funny how this connects to your melted oring situation isnt it?

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2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

12/4/2017 2:15 PM

Lean and maybe a small amount of detonation...Pictures are hard to tell, have to put the plug in natural sunlight. I would go up two sizes on the main.

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Tomac and/or Anderson for 2020.....