Quote:
Originally Posted by vmax
Hi Joe,
thanks for your reply. I already try my needles with 1 and 2 washer each, but my spark plug still white with a little black colour on outside ring. When I put 2 washer each needles, the thortle seem to heavy on midrange. So any idea my idle screw mixture?
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With a slip on, one washer does not make a whole lot of difference. (for the best results they should be at least 1 mm combined thickness.)
Set the idle mixtures to 2.5 turns or leave them alone.
Remove the snorkel and test to see if you can go past 9k. A little more air will help get past that rich zone.
Don't worry about your plug color at this point. White-grayish looking plugs are normal.
From
NGK website
How to Read Your Spark Plug
FAQ Reading Spark Plugs