Thread: LOUD backfire!!! Hawk 250
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Old 01-19-2017, 11:14 AM   #14
Weldangrind   Weldangrind is offline
 
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Location: Sardis, BC, Canada
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Quote:
Originally Posted by hnu13 View Post
i drilled out the pilot jet to 0.5mm
Thanks for the clarification. If I'm correct in my understanding, that equates to a #50 slow jet. Since the Keihin style uses much larger slow jets than Mikuni, I presume that size to be in the ballpark.

Do you have an air injection fitting or has it been blocked off?
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