I recently purchased a 94 tracker with a 60 hp oil injected mercury. At random a piercing beep noise comes on, sometimes it quits on its own, other times i have to turn ignition off! I understand from readin another post that it could possibly be a stuck float in the oil tank, the only difference was that it was mentioned to happen at start up and it was a beep, beep, beep... instead of being constant! Any insight would be greatly apprciated!