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fuel or electrical issue??

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Hello all,

Got an issue with my 2002 wakesetter vlx. When I took it out for the first time this season the idle seemed fine but ran very rough, sputtering and backfired when hitting full throttle. Did notice s whine in the fuel pump. Replaced the fuel filter and plugs, checked the screen at the base of the fuel pump, cleaned distributer with no cracks visible. Still ran rough so checked the fuel pressure which was low and replaced the fuel pump. Pressure looks good and runs great at idle and high speed but when wakesurfing at around 10mph I realize there is still a great deal of what I describe as sputtering. Boat shakes and sounds like a gatling gun while behind it. Doen not sound like metal but more in the exhaust. When gaining speed from idle boat runs rough, once reaching about 20mph all clears up and boat runs strong. Does anybody have advice on what to check next?

Thanks for any help,


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