Help, please... I recently purchased the boat at a mini storage auction. It had been sitting for about 4 years. After fixing 2 of the fuel pumps & replacing the hi pressure fuel pump, I got it started. Wow!!! I was way excited. Started the boat and began idling out to get past the buoys. After approx 30 seconds, a semi loud, continuous beep came on. When I pushed the throttle, the boat would not accelerate. I shut the engine off. After about 30 min., I restarted the enginge (no beep), hit the throttle & everything seemed fine, after approx 30 sec, the beep returned, but did not loose power. We rode around for just a couple of min. Tested it a couple of times & the above scenario repeated itself, Can someone please tell me what is likely the cause of this. Thank you.