have you done a tune up yet? cap/rotor probably need replaced. also when you set the timing you must pull the spout connector, if you didn't do this the timing will never set correctly.
2007 xlt F250 CC 6.0 stock, 33 ToyoMT
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94 Bronco XLT 357/E4OD/Warn HS9500I,6"ProComp Stage II 35x12.5x15 BFG AT's,4.88 gears/AussieFront/rear open,Edelbrock efi intake,jba headers