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what's your fuel PSI? did you do any thing to lower it? after going from EFI to a carb you have to drop the fuel PSI big time or it will over power the seat in the carb and pump lots of fuel into the carb and make it run like And make sure the timing is right too.
Just checked the electric pump that the guy put on it before i got it and it rated for 5 to 9 psi and the stock pressure from the machanical one is supposed to be 2.5 to 3.75 psi so that might explain burning so much gas.
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