Darby R
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Hi. I have a 79 Hawaiian 454 jacuzzi jet drive. I have this vibration. I feel it at an idle then it gets worse when slowly accelerating, now if I nail it to about 2500 I don't feel it as much. The boat sat for three years. Just put a cam and lifters in it this year. I think there was a vibration with it before the cam went out. Possibly impeller? Any other ideas?
Thank you.
Thank you.