Thread: Performance exhaust on stock gy6??
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Old 02-03-2013, 09:48 PM   #3
MEAN_MOTOFINO   MEAN_MOTOFINO is offline
 
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Join Date: Jan 2013
Location: South Carolina
Posts: 233
Check your plug you may be lean (white). You want it about tan.

Might need a larger main and may need to adjust the needle. Have you adjusted the a/f screw for highest idle?
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