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Yes the popping sound is running lean on one or two of the cylinders. I had same problem with not enough fuel delivery to all the carbs. Turns out I had a weak battery and my fuel pump relay went bad on me. Once I got the fuel to fill all four carb bowls it ran much better and with a little...

Hello, that was happening to mine and I replaced fuel pump and fuel pump relay and made sure battery was fully charged. If you don’t hear fuel pump “clicking” when you turn on the ignition than the carbs are not filling with fuel. Takes a few on and off at the ignition switch before you don’t...

Hi, I owned a 1996 Vmax and installed Holeshot performane full 4 into 2 exhaust. I jetted the carb. 3 sizes larger on mains and 2 sizes larger on pilots. It ran rich but hauled as! Gas mileage dropped to 25mpg though.