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Discussion Starter #1
i just got to ride my Raptor for a full day after putting on my HMF and Dobeck.
The next day it wouldn't start and I noticed that the plug was fouled. It had a black tip.
Am I running to rich or lean. I'm running 4,7,8,7 on the Dobeck, should I change my settings?
 

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Discussion Starter #3
Which pot should i change on the Dobeck?
 

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Where was most of your riding, lower rpms crusing or lots of high throttle???

try 3:30, 6,7,7

you can also try what dobeck rec. 4,7,4,9 , I have had no issues with my settings so far on my bike and I do allot of slow trail riding and have also done some draging at the dunes
 

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Discussion Starter #5
I do alot of trail riding...Mostly slow paced, but I do ride hard alot.
 

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Alex700R said:
i just got to ride my Raptor for a full day after putting on my HMF and Dobeck.
The next day it wouldn't start and I noticed that the plug was fouled. It had a black tip.
Am I running to rich or lean. I'm running 4,7,8,7 on the Dobeck, should I change my settings?
i have an hmf slip on with a dobeck also i run a 4.25,6.25,5.25,7 try that see what u think
 

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Also be sure to let yoy Raptor warm up a couple minutes before you ride. Don't touch the throttle till it's warmed up.

The iridium plugs seem to be a lot more foul resistant too. I 'just' changed my NGK Iridium that I installed in January. The plug coming out was fine, I just wanted everything tip-top for the dunes.
 
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