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Re: Spark Plug Heat Range
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Originally Posted by smiliecoyote
Has any one tried using the NGK DR9EA spark plug. I have to pretty much flog my bike on a large portion of my commute with plenty of near WOT operation I'm concerned the WOT may be in effect leaning me out. The DR8EA looks pretty good but shows where it may have been too hot. Will the colder plug help reduce the engine heat soak.
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Swapping sparkplug heat ranges to alter "richness" or "leanness" is really not the correct way to go about correcting the problem. You really should get to the root of the problem which sounds like simply lean jetting..
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1984 GPz1100
1987 GSX-R 750
2006 HD Fatboy
2001 KX500
2007 YZ450F
2001 GZ250 (Wife's !)
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