5.7 marine chevy vortec 350 engine knocking
(Vacaville, California )
So i had my boat out on the water the other day, when i was at approx 4k rpm about open throttle the engine began to lose power followed by a rapid lose of power. when i put the boat into neutral the engine was running rough/ Knocking and unable to stay running without a bit of throttle aslo hessitates to start unless you put throttle in but it is fuel injected so diffently shouldnt have to be giving any throttle. engines brand new just installed in june. engine now has approx 20 hrs on it and i did follow all the break insteps so now im at a dead end and need advice of where to start tracing the problem
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