It seems like its running rich. Have a 250, a 260, and a 280 jet on the way, as well as two new plugs. How do you do a plug chop? And does 260 sound about right?
270 Mainjet with my mods?
- Thread starter Braapbraap95
- Start date
To do a plug chop you need to warm the bike up to operating temperature and ride it to someplace you can get a good 5th or 6th gear run wide open throttle. Put a new plug in it, start it up and immediately run the bike through all of the gears without letting out of the throttle. As soon as you hit the top of the powerband while still pushing the throttle pull the clutch and at the same time hit the kill switch. Coast to a stop with the clutch pulled in and remove the plug. Re-install your old plug to ride back to the shop. You will cut the threaded portion of the plug off to expose the ceramic. There should be a 2mm grahm cracker brown ring extending up the ceramic. Darker than gramcracker brown or longer than 2mm and you are too rich on your main. Lighter or no ring, or less than 2mm and you are lean. I suggest you first progressively increase the jet size untill it bogs on the top end and then drop a size or two, this will put you very close. Then do the above described plug chop...Good luck.
Thanks bro! I'm positive its running rich. How rich is the problem... haha. I'm getting a uni instead of my K+N so it should lean it out a little anyway.
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