Try working on it in a dark environment seriously . Had one that was arcing out to a rubber hose on carb , like you I had one that out of the box-run , in the box - no run . My solution , Silicone spray - LOTS OF IT . Also all three of my Yerf's coil connecters would try to arc , spit and sputter or not run at all no matter how clean and tight the connections were , once again Silicone . Learned this after running on jack stands in a darkened garage . Could see them - Electrical Gremlins like to show up in the dark . When you spot one blast it with Silicone to repel .
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2011 BMS KING COBRA 150 Sold
YERF DOG SPIDERBOX's Sold
YERF DOG 3203's. Sold
MANCO SILVER FOX. Sold
2009 POLARIS 500 HO SPORTSMAN 4X4
2002 POLARIS 500 HO SPORTSMAN 4X4
2000 POLARIS MAGNUM 2X4
HALF A DOZEN CHEVY 4X4's
NEED-MO-BUGGY 
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