Rellik546
Petty Officer 1st Class
- Joined
- Feb 5, 2011
- Messages
- 270
hey guys,
again want to thanks for all the help i have been given by many of the members here, my brother and i managed to remove, and replace the stringers, deck and transom with all of your help, as well as remove engine, drive, and reinstall. we had a great summer on the boat, after lots of fine tuning, and replacing fuel and ignition parts, and rebuilding the carb to solve a bogging issue.
I have an 85 mercruiser 3.0L 140, 130hp with an alpha one outdrive
Toward the end of the season, a whining noise that increased in noise from quiet at idle, to audible from captains chair through dog house at 3,000 rpm, to very loud at WOT. the noise is high pitched, almost like a whistle but not quite. Im thinking its a bearing, i thought maybe it was the gimbal bearing but couldnt get my ear close enough, well i just removed the outdrive and inspected the bearing its fine. no side to side, up or down play. spins freely, no sound.
Is this sound a bearing? maybe in the motor itself? ive tried searching the threads but couldnt find anything quite like my noise. or at least described in the same manner. I did have a bad drive belt, that was squealing and i tightened it via the adjustable alternator mount. the belt had almost no play. then i replaced it with a new belt and gave it about 1/2 deflection. no more squeal. could it be the bearing in the alternator pulley?
any ideas will help, i looked at the manual and cant seem to find anything on it... so what parts when gone bad make a high pitch whinning sound that increases with rpm? its def coming from the dog house and not the drive, ive removed the dog house while it was making the noise, i just couldnt figure out where it was coming from.
again want to thanks for all the help i have been given by many of the members here, my brother and i managed to remove, and replace the stringers, deck and transom with all of your help, as well as remove engine, drive, and reinstall. we had a great summer on the boat, after lots of fine tuning, and replacing fuel and ignition parts, and rebuilding the carb to solve a bogging issue.
I have an 85 mercruiser 3.0L 140, 130hp with an alpha one outdrive
Toward the end of the season, a whining noise that increased in noise from quiet at idle, to audible from captains chair through dog house at 3,000 rpm, to very loud at WOT. the noise is high pitched, almost like a whistle but not quite. Im thinking its a bearing, i thought maybe it was the gimbal bearing but couldnt get my ear close enough, well i just removed the outdrive and inspected the bearing its fine. no side to side, up or down play. spins freely, no sound.
Is this sound a bearing? maybe in the motor itself? ive tried searching the threads but couldnt find anything quite like my noise. or at least described in the same manner. I did have a bad drive belt, that was squealing and i tightened it via the adjustable alternator mount. the belt had almost no play. then i replaced it with a new belt and gave it about 1/2 deflection. no more squeal. could it be the bearing in the alternator pulley?
any ideas will help, i looked at the manual and cant seem to find anything on it... so what parts when gone bad make a high pitch whinning sound that increases with rpm? its def coming from the dog house and not the drive, ive removed the dog house while it was making the noise, i just couldnt figure out where it was coming from.
